CN218976008U - Laser reflection device and laser - Google Patents

Abstract

The application provides a laser reflection device and a laser. The laser reflection device provided by the application comprises: transmitting optical fiber, receiving optical fiber, reflector and convex lens. The laser reflecting device further comprises a reflector fixing piece, the reflector is a round cake, the reflector fixing piece is a spherical shell structure with two sides cut off on the outer surface, light can be received and emitted from the two sides, the reflector is sleeved on the inner side of the reflector fixing piece, a first magnetic material is fixedly arranged on the reflector, and a second magnetic material is arranged on the outer side of the reflector fixing piece. By utilizing the attraction and repulsion performance between the first magnetic material and the second magnetic material, and meanwhile, the special shape collocation of the reflecting mirror and the reflecting mirror fixing piece is skillfully utilized, so that the coordinate in the X-axis direction and the coordinate in the Y-axis direction when the laser enters the receiving optical fiber are adjusted simultaneously. The problem of laser reflection device's setting firmly, fixture has also been solved.

Description

Laser reflection device and laser

Technical Field

The application relates to the technical field of lasers, in particular to a laser reflection device and a laser.

Background

As laser technology has grown more and more mature, laser beams are increasingly being used to cut, weld, drill, mark, scribe, etc. workpieces made of a variety of materials. Conventional machining can create undesirable defects such as microcracks or burrs that can develop when the machined workpiece is subjected to forces, degrading and weakening the strength and quality of the machined workpiece. Laser machining minimizes such undesirable defects, is generally cleaner, and results in a smaller heat affected zone. Laser machining uses a focused laser beam to create precise cuts and holes with high quality edges that minimize the formation of unwanted defects.

Fiber lasers have been widely used in industrial laser processing applications based on the characteristics of high power and high beam quality. Such as laser cutting and laser welding of metals and metal alloys. Typically the laser beam is transmitted in the forward direction in an optical fiber, but in some special applications it is also desirable to use a mirror to reverse the transmission of the laser beam, e.g., a reverse fiber coupler.

In order to realize the reverse transmission of laser, a reflecting mirror is required to be used, a reflecting angle is formed during reflection, errors exist in manufacturing of used devices, the perfect fit requirement of the mounting angle is difficult to ensure when the devices are assembled, and the reflecting angle is required to be flexibly adjustable for multiple use sometimes so as to ensure that a light beam enters the center of a target optical fiber. In addition, as shown in fig. 1, the center of the target optical fiber is on the end face of the optical fiber, and belongs to two-dimensional coordinates, namely X, Y coordinates, so that the difficulty in adjusting the coordinates or angles of two dimensions of the existing optical device is great, and the accuracy of entering the light beam into the target coordinates cannot be ensured at the same time after the light beam is adjusted.

Therefore, it is necessary to design a laser reflection device, which can adjust the two-dimensional movement of the laser beam in the X, Y direction of the end face of the target optical fiber, so as to solve the problem of flexible adjustment of the beam, and meanwhile, it is also necessary to set a fixing and clamping mechanism to solve the problem that the beam reaches the accuracy and stability of the target coordinates.

Disclosure of Invention

The application provides a laser reflection device and a laser. The laser reflection device provided by the application comprises: transmitting optical fiber, receiving optical fiber, reflector and convex lens. The beam emission and reception directions are opposite to each other (it should be noted that the opposite directions here are approximately opposite directions, and not the beam emission and reception directions must be exactly 180 ° opposite directions, for example, within 10 ° of 170 ° of opposite directions may be calculated as opposite directions described herein), and the convex lens is located between the emission optical fiber and the reflecting mirror, and also between the receiving optical fiber and the reflecting mirror. The light beam is emitted from the emitting optical fiber, and the light beam is diffused after leaving the emitting optical fiber, becomes collimated light after passing through the convex lens, is reflected after encountering the reflecting mirror, is focused after passing through the convex lens, and enters the center of the receiving optical fiber.

The receiving optical fiber is provided with an end face, a three-dimensional coordinate system is arranged by taking the center of the end face as an origin, an X axis and a Y axis are positioned on the end face and are mutually perpendicular, and a Z axis passes through the center of the end face and is perpendicular to the end face. The reflecting mirror has two adjustable degrees of freedom, and the coordinates of the light beam on the end face in the X-axis direction and the coordinates of the light beam on the Y-axis direction can be changed through the two adjustable degrees of freedom respectively.

The laser reflecting device changes the coordinates in the X-axis direction and the coordinates in the Y-axis direction of the light beam incident on the end face by adjusting the reflecting mirror 3 to rotate around the Y-axis and rotate around the X-axis, and further adjusts the coordinates in the X-axis direction and the coordinates in the Y-axis direction of the light beam incident on the end face, so that the light beam can be incident on the center of the end face, and the light beam is fully and effectively utilized.

The freedom degree of rotation around the Y axis and the freedom degree of rotation around the X axis are designed simultaneously, so that the fixing and clamping of the reflector are difficult, namely, the fixing and clamping mechanism for manufacturing the reflector is difficult to design. The utility model provides a laser reflecting device still includes the speculum mounting, the speculum is the cake type, the speculum mounting is spherical shell structure of surface excision both sides, and this both sides can receive light and light-emitting, the speculum cover is located the inboard of speculum mounting, set firmly first magnetic material on the speculum, the outside of speculum mounting is equipped with second magnetic material.

The embodiment of the application also provides a laser, which comprises the laser reflecting device of the embodiment, and the laser reflecting device enables the light beam transmitted by the laser to be transmitted in different optical fibers in a reverse direction.

According to the optical fiber receiving device, the attractive and repulsive performance between the first magnetic material and the second magnetic material is utilized, meanwhile, the special shape collocation of the reflecting mirror and the reflecting mirror fixing piece is ingeniously utilized, when the second magnetic material moves, the first magnetic material is driven to move, the reflecting mirror is enabled to generate the degree of freedom rotating around the X-axis and the Y-axis, and then the coordinate of the laser in the X-axis direction and the coordinate of the laser in the Y-axis direction when the laser enters the receiving optical fiber can be adjusted. Furthermore, the problem that the two-dimensional movement of the laser reflection device for adjusting the coordinates of the laser beam in the X, Y direction of the end face of the target optical fiber and the fixation and clamping mechanisms of the laser reflection device coexist is solved.

Drawings

For a clearer description of embodiments of the present application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description that follow are only some embodiments of the present application, and that other drawings may be obtained from these drawings by a person of ordinary skill in the art without inventive effort.

FIG. 1 is a schematic view of a first structure of a laser reflection device of the present application;

FIG. 2 is a schematic view of a receiving fiber of a laser reflection device according to the present application;

FIG. 3 is a schematic view of a second structure of the laser reflection device of the present application;

FIG. 4 is a schematic diagram of a fixing structure of a reflector of the present application;

fig. 5 is a schematic view of a third structure of the laser reflection device of the present application.

Reference numerals: 1. the optical fiber receiving device comprises an emitting optical fiber, 2, a receiving optical fiber, 2a, an end face, 3, a reflector, 4, a convex lens, 41, a convex lens fixing piece, 5, a light beam, 6, an outer fixing piece, 61, an outer fixing piece extending part, 7, a collimating head, 8, a quartz cap end, 31, a reflector fixing piece, 31a, an outer surface, 32, a reflector pressing ring, 33, a fixing piece pressing ring, 341, a first magnetic material, 342 and a second magnetic material.

Detailed Description

In order to provide a better understanding of the present application, those skilled in the art will now make further details of the present application with reference to the drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

As shown in fig. 1, fig. 1 is a first schematic structural diagram of a laser reflection device of the present application, where the laser reflection device includes: a transmitting optical fiber 1, a receiving optical fiber 2, a reflecting mirror 3 and a convex lens 4. The light beam emitting and receiving directions are opposite to each other, and the convex lens 4 is positioned between the emitting optical fiber 1 and the reflecting mirror 3 and also positioned between the receiving optical fiber 2 and the reflecting mirror 3. The light beam 5 is emitted from the emitting optical fiber 1, the light beam 5 is diffused after leaving the emitting optical fiber 1, the light beam 5 is changed into collimated light after passing through the convex lens 4, then reflected by the reflecting mirror 3, focused after passing through the convex lens 4, and then enters the center of the receiving optical fiber 2.

As shown in fig. 2, fig. 2 is a schematic structural diagram of a receiving fiber 2 of the laser reflection device of the present application, where the receiving fiber 2 has an end face 2a, a three-dimensional coordinate system is set with the center of the end face 2a as an origin, the X-axis and the Y-axis are located on the end face 2a and perpendicular to each other, and the Z-axis is perpendicular to the end face 2a through the center of the end face 2a. The mirror 3 of the present application has two adjustable degrees of freedom by which the coordinates in the X-axis direction and the coordinates in the Y-axis direction incident on the end face 2a can be changed, respectively. In general, the coordinates in the X-axis direction and the coordinates in the Y-axis direction incident on the end face 2a can be changed by designing the degree of freedom of rotation about the Y-axis and the degree of freedom of rotation about the X-axis, which are also referred to as a Y-axis and an X-axis, respectively. By adjusting the two degrees of freedom of the mirror 3 such that the coordinates of the light beam 5 in the X-axis, Y-axis direction on the end face 2a are changed, that is, the coordinates of the light beam 5 in the X-axis direction on the end face 2a can be changed when the mirror 3 rotates around the Y-axis, and the coordinates of the light beam 5 in the Y-axis direction on the end face 2a can be changed when the mirror 3 rotates around the X-axis.

In an alternative, the reflecting mirror 3 is provided with a reflecting film only on the side close to the transmitting optical fiber 1 and the receiving optical fiber 2, the light beam 5 is reflected from the transmitting light ray 1 to the receiving optical fiber 2 through the reflecting film on the reflecting mirror 3, and the maximum rotation angle of the reflecting mirror 3 around the X axis and the Y axis is 90 degrees.

In an alternative scheme, reflecting films are arranged on two sides of the reflecting mirror 3, the light beam 5 is reflected from the emitted light ray 1 to the receiving optical fiber 2 through the reflecting film on the reflecting mirror 3, and the maximum rotation angle of the reflecting mirror 3 around the X axis and the Y axis is 180 degrees.

However, in practical designs, the device that can simultaneously adjust the coordinates in the X-axis direction and the coordinates in the Y-axis direction makes it difficult to design the fixing and clamping mechanism for the mirror 3, that is, to adjust the coordinates in two dimensions and to stably fix and clamp the mirror.

In order to solve the above-mentioned problems, as shown in fig. 3 to 4, fig. 3 is a second schematic structural view of the laser reflection device of the present application, and fig. 4 is a schematic structural view of the fixing structure of the reflection mirror of the present application. The laser reflecting device further comprises a reflector fixing piece 31, the reflector 3 is a round cake, the reflector fixing piece 31 is a spherical shell structure with two cut sides of the outer surface 31a, the two sides can receive light and emit light, and the reflector 3 is sleeved on the inner side of the reflector fixing piece 31. The first magnetic material 341 is fixedly arranged on the reflecting mirror 3, the second magnetic material 342 is arranged on the outer side of the reflecting mirror fixing piece 31, and the coordinate in the X-axis direction and the coordinate in the Y-axis direction when laser enters the receiving optical fiber 2 can be adjusted simultaneously by utilizing the attraction and repulsion performance between the first magnetic material 341 and the second magnetic material 342 and simultaneously utilizing the special shape collocation of the reflecting mirror 3 and the reflecting mirror fixing piece 31, when the second magnetic material 342 moves, the first magnetic material 341 is driven to move, so that the reflecting mirror 3 generates the degree of freedom of rotating around the X-axis and the Y-axis, and the coordinate in the X-axis direction and the coordinate in the Y-axis direction when the laser enters the receiving optical fiber 2 can be adjusted simultaneously.

In a preferred embodiment, the first magnetic material 341 and the second magnetic material 342 are at least disposed on the X axis and the Y axis of rotation of the mirror 3, so as to better implement the degree of freedom of the mirror 3 in the two directions of the X axis and the Y axis.

In a preferred embodiment, at least two first magnetic materials 341 and second magnetic materials 342 are disposed on the X-axis and the Y-axis of the mirror 3, and two first magnetic materials 341 are disposed on opposite positions, and two second magnetic materials 342 are disposed on opposite positions. So as to better adjust the mirror 3 to give rise to degrees of freedom of rotation in both directions about the X-axis and the Y-axis.

In a preferred embodiment, the mirror mount 31 is a transparent thin layer of material to facilitate better viewing of the rotational state of the mirror 3.

In a preferred solution, the laser reflection device further includes an outer fixing member 6, where the outer fixing member 6 is a spherical shell and is sleeved on the outer side of the reflector fixing member 31, so that stability of the whole device can be better maintained. The second magnetic material 342 is disposed on the outer side of the outer fixing member 6, and similarly, moving the second magnetic material 342 can drive the reflecting mirror 3, so that the fixing and clamping of the device provided with the outer fixing member 6 can be more stable, and the reliability of rotation of the reflecting mirror 3 is relatively better.

In a preferred embodiment, the outer fixing member 6 is a transparent thin layer of material, again to facilitate a better view of the rotation state of the mirror 3.

In a specific embodiment, as shown in fig. 3, the laser reflection device further includes a mirror pressing ring 32, and after the mirror 3 rotates around the X-axis and the Y-axis to reach a desired position, the mirror 3 is stably sealed and fixed at the desired position.

In a specific embodiment, the laser reflection device further includes a fixing piece pressing ring 33, and the mirror fixing piece 31 is formed into a stable and sealed state by the fixing piece pressing ring 33.

In a specific embodiment, as shown in fig. 5, the laser reflection device further includes a quartz cap end 8, and one end of the quartz cap end 8 is used for fixing and clamping the transmitting optical fiber 1 and the receiving optical fiber 2, so that the transmitting optical fiber 1 and the receiving optical fiber 2 are stably fixed, and the transmission direction of the light beam 5 is not affected.

In a specific embodiment, the outer side of the quartz cap end 8 is further provided with a collimating head 7, the outer fixing member 6 is provided with an outer fixing member extending portion 61, and the collimating head 7 is located at the inner side of the outer fixing member extending portion 61 and has a stable fixing function on the quartz cap end 8.

In a specific embodiment, the convex lens 4 is further provided with a convex lens fixing member 41, and the convex lens 4 is formed into a more stable state by the convex lens fixing member 41.

Embodiments of the present application also provide a laser, which includes the laser reflection device of the above embodiments, through which the light beam 5 transmitted by the laser is reversely transmitted in a different optical fiber.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Positional relationship terms such as up, down, left, right, front, back, interior, exterior, etc. are used for the convenience of the reader to better understand the positional relationship of the product structure, and do not necessarily require that the product structure actually must be in that orientation. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is inherent to. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or device that comprises the element. In addition, the parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of the corresponding technical solutions in the prior art, are not described in detail, so that redundant descriptions are avoided.

Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. It should be noted that, for a person skilled in the art, several improvements and modifications may be made to the present application and the embodiments in the present application may be combined without departing from the principles of the present application, and these improvements, modifications and combinations also fall within the protection scope of the claims of the present application, i.e. the claims of the present application may arbitrarily combine the embodiments of the present application, and are not limited to the limited combination of the embodiments passed by the present application.

Claims (10)

1. A laser reflection device, comprising: the optical fiber transmitting device comprises an optical transmitting fiber (1), an optical receiving fiber (2), a reflecting mirror (3) and a convex lens (4), wherein the transmitting and receiving directions of a light beam (5) are opposite to each other, and the convex lens (4) is positioned between the optical transmitting fiber (1) and the reflecting mirror (3) and also positioned between the optical receiving fiber (2) and the reflecting mirror (3);

the light beam (5) is emitted from the emitting optical fiber (1), the light beam (5) is changed into collimated light after leaving the emitting optical fiber (1) and passing through the convex lens (4), then reflected by the reflecting mirror (3), focused after passing through the convex lens (4), and then enters the center of the receiving optical fiber (2);

the receiving optical fiber (2) is provided with an end face (2 a), a three-dimensional coordinate system is arranged by taking the center of the end face (2 a) as an origin, an X axis and a Y axis are positioned on the end face (2 a) and are mutually perpendicular, and a Z axis is perpendicular to the end face (2 a) through the center of the end face (2 a);

the laser reflecting device further comprises a reflector fixing piece (31), the reflector (3) is a round cake, the reflector fixing piece (31) is a spherical shell structure with two sides cut off by an outer surface (31 a), light can be received and emitted from the two sides, the reflector (3) is sleeved on the inner side of the reflector fixing piece (31), a first magnetic material (341) is fixedly arranged on the reflector (3), and a second magnetic material (342) is arranged on the outer side of the reflector fixing piece (31).

2. A laser reflection device as claimed in claim 1, characterized in that the mirror (3) is provided with a reflecting film only on the side close to the transmitting optical fiber (1) and the receiving optical fiber (2), the light beam (5) being reflected from the transmitting optical fiber (1) to the receiving optical fiber (2) via the reflecting film on the mirror (3), the maximum rotation angle of the mirror (3) being 90 ° around the X-axis and the Y-axis.

3. A laser reflection device as claimed in claim 1, characterized in that the reflecting mirror (3) is provided with reflecting films on both sides, the light beam (5) being reflected from the transmitting optical fiber (1) to the receiving optical fiber (2) via the reflecting film on the reflecting mirror (3), the maximum rotation angle of the reflecting mirror (3) around the X-axis and the Y-axis being 180 degrees.

4. A laser reflection device as claimed in claim 1, characterized in that the mirror mount (31) is made of a transparent thin layer material.

5. The laser reflection device according to claim 4, further comprising an outer fixing member (6), wherein the outer fixing member (6) is a spherical shell, and is sleeved on the outer side of the reflector fixing member (31), and the second magnetic material (342) is disposed on the outer side of the outer fixing member (6).

6. A laser reflection device as claimed in claim 5, characterized in that the outer fixing member (6) is made of a transparent thin layer material.

7. The laser reflection device according to claim 5, characterized in that the laser reflection device further comprises a quartz cap end (8), one end of the quartz cap end (8) being fixed, clamping the transmitting optical fiber (1) and the receiving optical fiber (2).

8. The laser reflection device according to claim 7, wherein a collimating head (7) is further arranged at the outer side of the quartz cap end (8), the outer fixing member (6) is provided with an outer fixing member extending part (61), and the collimating head (7) is positioned at the inner side of the outer fixing member extending part (61) and has a stable fixing effect on the quartz cap end (8).

9. The laser reflection device according to claim 7, further comprising a mirror press ring (32) and a fixing member press ring (33), wherein after the mirror (3) rotates around the X-axis and the Y-axis to a desired position, the mirror press ring (32) stably seals and fixes the mirror (3) at the desired position, and the mirror fixing member (31) is brought into a stable and fixed state by the fixing member press ring (33).

10. A laser, characterized in that it comprises a laser reflection device according to any one of claims 1-9, by means of which the light beam (5) transmitted by the laser is transmitted in opposite directions in different optical fibers.

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