CN220171340U

CN220171340U - Light absorption device, laser and laser processing equipment

Info

Publication number: CN220171340U
Application number: CN202320995892.8U
Authority: CN
Inventors: 陈刘祥; 何柏林; 徐方华; 郭丽
Original assignee: Hans Laser Technology Industry Group Co Ltd
Current assignee: Hans Laser Technology Industry Group Co Ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-12-12
Anticipated expiration: 2033-04-25

Abstract

The utility model is applicable to the technical field of optics, and provides a light absorption device, a laser and laser processing equipment, wherein the light absorption device comprises: a beam splitting part; a first light absorbing member disposed on a reflection optical path of the beam splitting member to absorb light reflected by the beam splitting member; and the second light absorption component is arranged on the transmission light path of the beam splitting component so as to absorb the light transmitted by the beam splitting component. The light absorbing device provided by the embodiment of the utility model can improve the light absorbing capacity.

Description

Light absorption device, laser and laser processing equipment

Technical Field

The utility model belongs to the technical field of optics, and particularly relates to a light absorption device, a laser and laser processing equipment.

Background

Lasers require the use of light absorbing means to absorb laser light and stray light. The current light absorbing device absorbs laser and stray light by arranging threaded holes or blind holes on metal parts. Although this method can absorb light, the high energy density parasitic light generated by the high-power laser can cause the surface of the metal part to become molten to form smoke and dust, and the light absorption capacity is low.

Disclosure of Invention

The embodiment of the utility model provides a light absorption device, a laser and laser processing equipment, which can improve the light absorption capacity.

In a first aspect, embodiments of the present utility model provide a light absorbing device comprising:

a beam splitting part;

a first light absorbing member disposed on a reflection optical path of the beam splitting member to absorb light reflected by the beam splitting member;

and the second light absorption component is arranged on the transmission light path of the beam splitting component so as to absorb the light transmitted by the beam splitting component.

In some possible implementations of the first aspect, the light absorbing device further includes:

the beam splitting component is arranged on the fixed seat;

the first light absorbing member is part of the holder, or the second light absorbing member is part of the holder.

In some possible implementations of the first aspect, if the first light absorbing member is part of the holder, the second light absorbing member is disposed on the holder;

if the second light absorbing member is part of the fixing base, the first light absorbing member is disposed on the fixing base.

and a cooling member disposed around the first light absorbing member or around the second light absorbing member.

In some possible implementations of the first aspect, the cooling component is part of the holder.

In some possible implementations of the first aspect, the cooling component is a tank for containing a cooling medium.

and the covering part is arranged on the fixing seat to cover the groove.

In some possible implementations of the first aspect, the holder is provided with a light-transmitting area; the light passing area is positioned on an incident light path of the beam splitting component.

In some possible implementations of the first aspect, the first light absorbing member is an attenuating light absorbing groove and the second light absorbing member is a light absorbing cover.

In some possible implementations of the first aspect, the attenuating light absorption grooves are curved grooves; the inner side of the light absorbing cover is provided with a honeycomb light absorbing hole.

and the light blocking component is arranged on the fixing seat to block the attenuation light absorption groove.

In some possible implementations of the first aspect, the first light absorbing member is disposed on one side of the beam splitting member; the second light absorbing member is disposed at the other side of the beam splitting member.

In a second aspect, embodiments of the present utility model provide a laser comprising a light absorbing device as claimed in any one of the preceding claims.

In a third aspect, embodiments of the present utility model provide a laser processing apparatus comprising a light absorbing device as described in any one of the preceding claims.

The embodiment of the utility model has the beneficial effects that:

the beam splitting component divides incident light into reflected light and transmitted light, the first light absorbing component absorbs the reflected light, and the second light absorbing component absorbs the transmitted light, so that smoke and dust can be avoided, light absorption can be completed rapidly, and light absorption capacity can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a light absorbing device according to an embodiment of the present utility model;

FIG. 2 is an exploded view of an angle of the light absorbing device according to an embodiment of the present utility model;

FIG. 3 is an exploded view of a light absorbing device according to another embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a light absorbing device according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a first cooling component of a light absorbing device according to an embodiment of the present utility model.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the present utility model is further described in detail below with reference to fig. 1 to 5 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be 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 be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

It should be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Embodiments of the present utility model provide a light absorbing device that may be applied to a laser or a laser processing apparatus.

Fig. 1 is a front view of a light absorbing device according to an embodiment of the present utility model. Fig. 2 is an exploded view of an angle of a light absorbing device according to an embodiment of the present utility model. Fig. 3 is an exploded view of another angle of the light absorbing device according to an embodiment of the present utility model. Fig. 4 is a cross-sectional view of a light absorbing device according to an embodiment of the present utility model. Referring to fig. 1 to 4, the light absorbing device provided by the embodiment of the present utility model includes a first light absorbing member 1, a second light absorbing member 2, and a beam splitting member 3.

Referring to fig. 2 and 4, the beam splitting part 3 is for splitting light to split incident light into a plurality of beams. Specifically, the beam splitter 3 can reflect a part of the incident light and can transmit another part of the incident light, thereby separating the incident light into reflected light and transmitted light.

The beam splitting part 3 may be a beam splitter, for example.

The first light absorbing member 1 is for absorbing light.

Referring to fig. 2 and 4, the first light absorbing member 1 is disposed at a reflection optical path F1 of the beam splitting member 3 to absorb light reflected by the beam splitting member 3. The first light absorbing member 1 may be specifically disposed on the light reflecting side of the beam splitting member 3.

Fig. 5 is a schematic structural diagram of a first cooling member 1 of a light absorbing device according to an embodiment of the present utility model. Referring to fig. 5, the first light absorbing member 1 may be specifically an attenuation light absorbing groove; the attenuation and absorption grooves are curved grooves, such as spiral grooves; light irradiation to the attenuating light absorption groove can generate multiple reflections and be converted into heat energy.

The second light absorbing member 2 is also for absorbing light.

Referring to fig. 4, the second light absorbing member 2 is disposed at the transmission light path T1 of the beam splitting member 3 to absorb light transmitted through the beam splitting member 3. The second light absorbing member 2 may be specifically disposed at a light transmissive side of the beam splitting member 3.

Referring to fig. 2 and 4, the second light absorbing member 2 may be a light absorbing cover in particular. The inner side 21 of the light absorbing cover is provided with a honeycomb light absorbing hole. The inner side of the light absorbing cover can be conical, and the honeycomb light absorbing holes are positioned on the conical surface and can quickly absorb light.

Referring to fig. 4, incident light irradiates the beam splitting part 3, the beam splitting part 3 reflects a part of the light to the first light absorbing part 1 and transmits another part of the light to the second light absorbing part 2, the intensity of the reflected light is smaller than that of the incident light, and the intensity of the transmitted light is also smaller than that of the incident light; the reflected light is absorbed by the first light absorbing member 1 and the transmitted light is absorbed by the second light absorbing member 2.

From the above, it is understood that the beam splitting member 3 splits the incident light into the reflected light and the transmitted light, the first light absorbing member 1 absorbs the reflected light, and the second light absorbing member 2 absorbs the transmitted light, so that it is possible to prevent smoke and dust from being generated due to an excessively high light energy density, to rapidly complete the light absorption, and to improve the light absorbing capability.

Referring to fig. 3, the light absorbing device may further include a fixing base 4.

The beam splitting part 3 is arranged on the fixing seat 4.

Referring to fig. 3, the holder 4 has a mounting recess 41, and the beam splitting part 3 is located in the mounting recess 41, as an example.

The first light-absorbing member 1 is part of the holder 4 or the second light-absorbing member 2 is part of the holder 4.

If the first light absorbing member 1 is a part of the fixing base 4 (for example, the whole fixing base 4 is in an integrally formed structure), the second light absorbing member 2 is disposed on the fixing base 4, so that the integration level of the light absorbing device can be improved, and the structure of the light absorbing device is more compact.

If the second light absorbing member 2 is a part of the fixing base 4 (for example, the whole fixing base 4 is in an integrally formed structure), the first light absorbing member 1 is disposed on the fixing base 4, so that the integration level of the light absorbing device can be improved, and the structure of the light absorbing device is compact.

Referring to fig. 3, the above-described light absorbing device may further include a cooling member 5.

Referring to fig. 3, a cooling member 5 is disposed around the first light absorbing member 1 to cool the first light absorbing member 1.

If the first light absorbing member 1 is a part of the fixing base 4, the second light absorbing member 2 is disposed on the fixing base 4, and the cooling member 5 can cool the first light absorbing member 1 and the second light absorbing member 2 at the same time, so that the light absorbing capability of the light absorbing device can be further improved.

In other embodiments, a cooling member 5 is disposed around the second light absorbing member 2 to cool the second light absorbing member 2.

If the second light absorbing member 2 is a part of the fixing base 4, the first light absorbing member 1 is disposed on the fixing base 4, and the cooling member 5 can also cool the first light absorbing member 1 and the second light absorbing member 2 at the same time, so that the light absorbing capability of the light absorbing device can be further improved.

The cooling member 5 may be a part of the fixing base 4 to further improve the integration level of the light absorbing device. Referring to fig. 3, the cooling member 5 may be a groove for accommodating a cooling medium, for example. The cooling medium may be water or a refrigerant fluid.

Referring to fig. 3, the above-described light absorbing device may further include a cover member 6.

A cover part 6 is provided to the holder 4 to cover the groove for accommodating the cooling medium (i.e., to cover the cooling part 5).

The cover part 6 may in particular be a water-sealing plate. After the fixing seat 4 is tightly sealed and fastened with the water sealing plate, the first light absorption component 1 (namely the attenuation light absorption groove) and the second light absorption component 2 (namely the light absorption cover) can be rapidly cooled through circulating cooling water, so that heat of the first light absorption component 1 and the second light absorption component 2 is taken away.

Referring to fig. 2 and 4, the fixing base 4 may be provided with a light passing region 42.

The light-transmitting region 42 may be a hole or a light-transmitting solid portion of the fixing base 4.

The light passing region 42 is located on the incident light path of the beam splitting part 3, so that the incident light energy is irradiated to the beam splitting part 3 by the light passing region 42.

The light absorbing means described above may further comprise a light blocking member 7.

Referring to fig. 2, the attenuating light absorbing groove (i.e., the first light absorbing member 1) is part of the mounting base 4.

The light blocking member 7 is disposed on the fixing base 4 to block the attenuation light absorbing groove (i.e., the first light absorbing member 1) and prevent light from leaking.

The embodiment of the utility model also provides a laser which comprises the light absorbing device provided by any embodiment.

The setting of light absorbing device can absorb the parasitic light that the laser produced and can prevent to produce smog and dust in the intracavity of laser to can ensure the intracavity ring cleanliness factor of laser, can improve the life of crystal, and then can improve the stability of laser.

The light absorbing device provided by the embodiment of the utility model can improve the light absorbing capacity and take away the heat in the cavity of the laser, and has the advantages of compact overall structure and low cost.

The embodiment of the utility model also provides laser processing equipment, which comprises the light absorbing device provided by any embodiment.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A light absorption device, characterized in that it includes:

Beam splitting components;

A first light-absorbing component is disposed in the reflective light path of the beam splitting component to absorb the light reflected by the beam splitting component;

The second light-absorbing component is disposed in the transmission light path of the beam splitting component to absorb the light transmitted through the beam splitting component.

2. The light absorbing device according to claim 1, wherein the light absorbing device further comprises:

A fixed base, the beam splitting component is arranged on the fixed base;

The first light-absorbing component is a part of the fixed base, or the second light-absorbing component is a part of the fixed base.

3. The light absorbing device according to claim 2, wherein if the first light absorbing component is part of the fixed base, the second light absorbing component is provided on the fixed base;

If the second light-absorbing component is part of the fixed base, the first light-absorbing component is provided on the fixed base.

4. The light absorbing device according to claim 2, wherein the light absorbing device further comprises:

A cooling component is provided around the first light-absorbing component or around the second light-absorbing component.

5. The light absorbing device according to claim 4, wherein the cooling component is a part of the fixed base.

6. The light absorbing device according to claim 5, wherein the cooling component is a groove for accommodating a cooling medium;

The light absorbing device also includes:

A covering component is provided on the fixed base to cover the slot.

7. The light absorption device according to claim 2, wherein the fixed base is provided with a light-passing area; the light-passing area is located in the incident light path of the beam splitting component.

8. The light absorption device according to claim 2, wherein the first light absorption component is an attenuating light absorption groove, and the second light absorption component is a light absorption cover.

9. The light absorption device according to claim 8, wherein the attenuation light absorption groove is a curved groove; the inside of the light absorption cover is provided with honeycomb light absorption holes;

The light absorbing device also includes:

A light-blocking component is provided on the fixed base to block the attenuating light-absorbing groove.

10. The light absorbing device according to any one of claims 1 to 9, wherein the first light absorbing component is disposed on one side of the beam splitting component; and the second light absorbing component is disposed on one side of the beam splitting component. other side of the bundle assembly.

11. A laser, characterized by comprising the light absorbing device according to any one of claims 1 to 10.

12. Laser processing equipment, characterized by comprising the light absorption device according to any one of claims 1 to 10.