Light beam homogenizing device and laser

Abstract

The utility model is suitable for the technical field of laser transmission, and provides a light beam homogenizing device and a laser, the light beam homogenizing device comprises a base, the base is provided with at least two containing grooves arranged at intervals, the containing grooves are bent, and the width of one containing groove is larger than that of the other containing groove. According to the embodiment of the invention, the accommodating groove can accommodate the energy transmitting optical fibers with different diameters, so that the applicability of the light beam homogenizing device is improved.

Description

Technical Field

[0001] This application relates to the field of laser transmission technology, and particularly to a beam homogenization device and a laser. Background Art

[0002] Fiber lasers have the characteristics of high beam quality, small volume, light weight, and high stability, and are widely used in the fields of welding and cutting.

[0003] Beam homogenization is a technology that homogenizes the spot energy distribution of the output beam of a fiber laser and has important applications in the fields of welding and cutting. The current beam homogenization devices can only be applied in specific scenarios and have great limitations. Utility Model Content

[0004] The embodiments of this application provide a beam homogenization device and a laser, which can improve the applicability of the beam homogenization device.

[0005] In a first aspect, the embodiments of this application provide a beam homogenization device, which includes:

[0006] A base, on which at least two spaced-apart receiving grooves are provided. The receiving grooves are curved, and the width of one receiving groove is greater than that of the other receiving groove.

[0007] In some possible implementation manners of the first aspect, the distance between the two side walls of the same receiving groove is always equal.

[0008] In some possible implementation manners of the first aspect, the curved segments of the same receiving groove are periodically distributed.

[0009] In some possible implementation manners of the first aspect, the number of the curved segments of the same receiving groove is greater than or equal to 6, and the angle of each curved segment is 0.75 rad - 0.95 rad.

[0010] In some possible implementation manners of the first aspect, the curved shape of one receiving groove is the same as that of the other receiving groove.

[0011] In some possible implementation manners of the first aspect, the beam homogenization device further includes:

[0012] An upper cover, which is detachably covered on the base so that the upper cover covers the receiving groove.

[0013] In some possible implementation manners of the first aspect, the beam homogenization device further includes:

[0014] A vibrator, the base is disposed at the output end of the vibrator, and the vibrator is configured to drive the base to vibrate along the width direction of the receiving groove.

[0015] In some possible embodiments of the first aspect, both ends of the receiving groove are through.

[0016] In a second aspect, an embodiment of the present application provides a laser, the laser comprising:

[0017] A beam homogenizing device as described in any of the above technical solutions;

[0018] A cooling base, the base is disposed on the cooling base;

[0019] A power transmission optical fiber, the power transmission optical fiber is embedded in the receiving groove.

[0020] In some possible embodiments of the second aspect, the laser further comprises:

[0021] A protective sleeve, the protective sleeve is sleeved on the power transmission optical fiber, and the protective sleeve is embedded in the receiving groove.

[0022] In some possible embodiments of the second aspect, the width of the receiving groove is greater than or equal to the diameter of the power transmission optical fiber.

[0023] The beam homogenizing device and the laser provided by the embodiments of the present application, the receiving groove is used to accommodate the power transmission optical fiber, so that the power transmission optical fiber is bent and deformed together with the bending of the receiving groove through the groove wall of the receiving groove, thereby improving the beam quality transmitted by the power transmission optical fiber; since at least two receiving grooves are provided on the base, and the width of one receiving groove is greater than the width of another receiving groove; therefore, embedding the power transmission optical fiber in different receiving grooves can make the deformation degree of the power transmission optical fiber different, and it is easy to quantify the homogenization degree of the beam transmitted by the power transmission optical fiber; it can also accommodate power transmission optical fibers of different diameters, thereby improving the applicability of the beam homogenizing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0025] Figure 1 It is a schematic structural diagram of an embodiment of the beam homogenizing device of the present application.

[0026] Explanation of the reference numerals in the drawings:

[0027] 1. Base; 11. Accommodating groove; 12. Fixed threaded hole.

[0028] The realization of the purpose of this application, its functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.

[0032] It should be understood that the term "and / or" used in the description and claims of this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more, unless otherwise specifically defined.

[0034] The embodiments of this application provide a beam homogenizing device and a laser, which are used to solve the technical problem of the large limitations of the beam homogenizing device.

[0035] In the embodiments of this application, as Figure 1As shown in the figure, the beam homogenization device includes a base 1. At least two accommodating grooves 11 are provided on the base 1 at intervals. The accommodating grooves 11 are bent, and the width of one accommodating groove 11 is greater than that of another accommodating groove 11.

[0036] During use, the energy transmission optical fiber is embedded into the accommodating groove 11. Since the accommodating groove 11 is bent, the groove wall of the accommodating groove 11 will change the extending direction of the energy transmission optical fiber in the accommodating groove 11, so that the energy transmission optical fiber is bent and deformed together with the bending of the accommodating groove 11. After bending and deforming the energy transmission optical fiber, the spot quality of the beam transmitted by the energy transmission optical fiber can be improved, thereby achieving the purpose of homogenizing the beam transmitted by the energy transmission optical fiber.

[0037] The width of one accommodating groove 11 is greater than that of another accommodating groove 11, that is, the widths between the accommodating grooves 11 are different.

[0038] In this embodiment, the widths of all the accommodating grooves 11 may be distributed in an arithmetic progression.

[0039] The accommodating groove 11 in the embodiment of the present application is used to accommodate the energy transmission optical fiber, so that the energy transmission optical fiber is bent and deformed together with the bending of the accommodating groove 11 through the groove wall of the accommodating groove 11, thereby improving the beam quality transmitted by the energy transmission optical fiber; since at least two accommodating grooves 11 are provided on the base 1, and the width of one accommodating groove 11 is greater than that of another accommodating groove 11; therefore, embedding the energy transmission optical fiber into different accommodating grooves 11 can make the deformation degree of the energy transmission optical fiber different, and it is easy to quantify the homogenization degree of the beam transmitted by the energy transmission optical fiber; it can also accommodate energy transmission optical fibers with different diameters, thereby improving the applicability of the beam homogenization device.

[0040] It can be understood that the closer the diameter of the energy transmission optical fiber is to the width of the accommodating groove 11, the closer the bending shape of the energy transmission optical fiber is to the bending shape of the accommodating groove 11, that is, the greater the bending deformation of the energy transmission optical fiber. Therefore, embedding the energy transmission optical fiber into the accommodating grooves 11 with different widths can make the bending deformations of the energy transmission optical fiber different, so that the accommodating grooves 11 with different widths can be selected according to actual needs.

[0041] In one embodiment, as Figure 1 shown, the distance between the two side walls of the same accommodating groove 11 is always equal, which is convenient for opening the accommodating groove 11 and reduces the difficulty of manufacturing the base 1; it can also facilitate the quantification of the homogenization degree of the beam transmitted by the energy transmission optical fiber.

[0042] In one embodiment, as Figure 1 shown, the bending sections of the same accommodating groove 11 are distributed periodically, which is convenient for opening the accommodating groove 11 and reduces the difficulty of manufacturing the base 1; it can also facilitate the quantification of the homogenization degree of the beam transmitted by the energy transmission optical fiber and improve the homogenization effect of the beam transmitted by the energy transmission optical fiber.

[0043] In one embodiment, as Figure 1 shown, the number of bending segments of the same receiving groove 11 is greater than or equal to 6, and the angle of each bending segment is 0.75 rad - 0.95 rad, so as to improve the homogenization effect of the light beam transmitted by the energy transmission optical fiber.

[0044] In one embodiment, as Figure 1 shown, the bending shape of one receiving groove 11 is the same as that of another receiving groove 11, which is convenient for opening the receiving groove 11 and reducing the difficulty of manufacturing the base 1; it is also convenient to quantify the homogenization degree of the light beam transmitted by the energy transmission optical fiber.

[0045] In one embodiment, the light beam homogenization device further includes an upper cover, and the upper cover is detachably covered on the base 1 so that the upper cover covers the receiving groove 11. The upper cover can prevent the energy transmission optical fiber from popping out of the receiving groove 11, thereby improving the stability of the light beam homogenization device for homogenizing the light beam.

[0046] In one embodiment, the upper cover is fixed to the base 1 by screws. Among them, the upper cover can be a plate-like structure.

[0047] In this embodiment, as Figure 1 shown, fixing threaded holes 12 are provided on the base 1, and the upper cover is fixed to the base 1 by passing screws through the upper cover and the fixing threaded holes 12.

[0048] In one embodiment, the light beam homogenization device further includes a vibrator, the base 1 is arranged at the output end of the vibrator, and the vibrator is used to drive the base 1 to vibrate along the width direction of the receiving groove 11. So as to improve the homogenization effect of the light beam transmitted by the energy transmission optical fiber.

[0049] In one embodiment, as Figure 1 shown, both ends of the receiving groove 11 are penetrated, so as to facilitate embedding the energy transmission optical fiber into the receiving groove 11.

[0050] In addition, an embodiment of the present application further provides a laser, which includes a cooling base, an energy transmission optical fiber and a light beam homogenization device. The base 1 is arranged on the cooling base, the energy transmission optical fiber is embedded in the receiving groove 11, and the specific structure of the light beam homogenization device refers to the above embodiment. Since the laser adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments.

[0051] In this embodiment, the base 1 has heat conductivity, so as to conduct the heat generated by the energy transmission optical fiber through the base 1 to the cooling base, and then take away the heat through the cooling base to improve the heat dissipation performance. Among them, the cooling base can be a water cooling plate.

[0052] When a vibrator is provided, the vibrator is arranged on the cooling base.

[0053] In one embodiment, the laser further includes a protective sleeve sleeved on the energy transmission optical fiber, and the protective sleeve is embedded in the accommodation groove 11. The protective sleeve is used to protect the energy transmission optical fiber and prevent the groove wall of the accommodation groove 11 from damaging the energy transmission optical fiber.

[0054] In this embodiment, the protective sleeve is bonded to the base 1.

[0055] In one embodiment, the width of the accommodation groove 11 is greater than or equal to the diameter of the energy transmission optical fiber. So that the energy transmission optical fiber can be placed in the accommodation grooves 11 with different widths, making the bending deformations generated by the energy transmission optical fiber different.

[0056] In this embodiment, when the protective sleeve is provided, the width of the accommodation groove 11 is greater than or equal to the diameter of the protective sleeve.

[0057] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the specification and drawings of the present application under the inventive concept of the present application, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A light beam homogenization device, characterized in that: The light beam homogenizing device comprises: The base is provided with at least two spaced-apart receiving grooves, the receiving grooves are bent, and the width of one receiving groove is greater than the width of the other receiving groove.

2. The light beam homogenizing device according to claim 1, wherein: The distance between the two side walls of the same receiving groove is always equal.

3. The light beam homogenizing device according to claim 2, wherein: The curved sections of the same accommodating groove are distributed periodically.

4. The light beam homogenizing device according to claim 3, wherein: The number of the curved sections in the same accommodating groove is greater than or equal to 6, and the angle of each curved section is 0.75 rad-0.95 rad.

5. The light beam homogenizing device according to claim 1, wherein: The curved shape of one of the accommodating grooves is the same as the curved shape of the other accommodating groove.

6. The light beam homogenizing device according to claim 1, wherein: The light beam homogenizing device further comprises: The upper cover is detachably covered on the base so that the upper cover covers the accommodating groove.

7. The light beam homogenizing device according to claim 1, wherein: The light beam homogenizing device further comprises: The vibrator is provided at the output end of the vibrator, and the vibrator is used to drive the base to vibrate along the width direction of the receiving groove.

8. The light beam homogenizing device according to claim 1, wherein: Both ends of the accommodating groove are connected.

9. A laser, characterized in that: The laser comprises: The beam homogenizing device according to any one of claims 1 to 8; a cooling base, the base being arranged on the cooling base; An energy transmitting optical fiber is embedded in the accommodating groove.

10. The laser according to claim 9, wherein The laser also includes: A protective sleeve is sleeved on the energy transmitting optical fiber and is embedded in the accommodating groove.

11. The laser according to claim 9, wherein The width of the accommodating groove is greater than or equal to the diameter of the energy transmitting optical fiber.

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