CN219026346U - Device for preventing laser diffraction light - Google Patents
Device for preventing laser diffraction light Download PDFInfo
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- CN219026346U CN219026346U CN202122428607.8U CN202122428607U CN219026346U CN 219026346 U CN219026346 U CN 219026346U CN 202122428607 U CN202122428607 U CN 202122428607U CN 219026346 U CN219026346 U CN 219026346U
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- collimating lens
- laser diffraction
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Abstract
In order to solve the problem of how to effectively avoid the diffracted light entering the laser cutting head and participating in the collimation focusing process, the utility model provides a device for preventing the diffracted light of laser.
Description
Technical Field
The utility model relates to the field of laser, in particular to a device for preventing laser diffraction light.
Background
The fiber laser cutting head is a relatively high and new technology for the cutting industry, so that the cutting is faster and more accurate, the fiber laser cutting head is widely applied, and the laser lens needs to be positioned in the using process, which is a very important process.
When the current laser cutting head device works, laser in the optical fiber enters the laser cutting head, passes through the collimating mirror, then enters the focusing mirror, and after the laser in the optical fiber enters the laser cutting head, a main laser beam exists, wherein a plurality of miscellaneous diffracted lights exist.
In the working process of the laser cutting head, the main laser beam, rather than the diffracted light, can be effectively cut, so that it is very important how to effectively avoid the diffracted light entering the interior of the laser cutting head to participate in the collimation focusing process.
Moreover, the diffracted light enters the laser cutting head, not only is not helpful to the cutting of the laser cutting head, but also a great deal of diffracted light is beaten on the inner wall of a laser path of the laser cutting head due to the difference of the scattering angle and the main light scattering angle, so that the temperature of a side wall component of the laser cutting head and the temperature of a collimating mirror are increased, the direct influence caused by the temperature increase of the collimating mirror is inaccurate in focusing point, the cutting efficiency is reduced, and the service life of the laser cutting head is also influenced due to the temperature increase of the side wall component and the collimating mirror.
Disclosure of Invention
In view of this, in order to solve the problem of how to effectively avoid the diffracted light entering the interior of the laser cutting head and participating in the collimation focusing process, the utility model provides a device for preventing the diffracted light of laser, which is characterized in that a diffraction ring is arranged below a collimation lens assembly, a black light absorption coating is coated on the diffraction ring, and when laser beams pass through the collimation lens, the laser beams pass through the diffraction ring, and the useless stray light is absorbed by the diffraction ring to play the role of releasing the diffraction of the laser.
The utility model provides a device of preventing laser diffraction light, includes the collimating lens subassembly, and the collimating lens subassembly includes collimating lens cavity 1, the inside collimating lens 2 that is equipped with of collimating lens cavity 1, its characterized in that: the lower part of the collimating lens 2 is provided with a diffraction ring 3, and when the laser beam passes through the collimating lens 2 to reach the diffraction ring 3, the diffraction ring 3 absorbs the useless stray light of the laser beam.
Further, the diffraction ring 3 is coated with a black light-absorbing coating.
Furthermore, the collimating lens cavity 1 is a hollow cavity, a lens barrel 5 is arranged in the hollow cavity, the collimating lens 2 is arranged on the lens barrel 5, and the diffraction ring 3 is positioned at the lower part of the lens barrel 5.
Further, the light-deriving ring 3 is of a hollow ring structure, and a connecting block 4 is arranged at one end of the light-deriving ring 3.
Further, the back of the collimating mirror cavity 1 is provided with a waterway plate 8, a pressing block 9 is arranged at the position, close to the diffraction ring 3, of the waterway plate 8, and the connecting block 4 is located at the lower part of the pressing block 9 and is locked with the pressing block 9.
Further, a focusing mirror cavity 6 is arranged at the lower part of the collimating mirror cavity 1, and the focusing mirror cavity 6 is of a hollow structure.
Further, a focusing mirror cavity upper cover 7 is arranged at the top of the focusing mirror cavity 6, and the collimating mirror cavity 1 is connected with the focusing mirror cavity 6 through the focusing mirror cavity upper cover 7.
Further, the focusing lens cavity upper cover 7 is of a hollow structure, the diffraction ring 3 is located on the focusing lens cavity upper cover 7, and the center of the hollow structure of the diffraction ring 3 and the center of the hollow structure of the focusing lens cavity upper cover 7 are located on the same axis.
Further, the connecting block 4 is locked with the pressing block 9 through a screw or a bolt.
Further, the upper cover 7 of the focusing lens cavity is locked with the connecting block 4 through screws or bolts.
The beneficial effects of the utility model are as follows: the utility model provides a device for preventing laser diffraction light, which is characterized in that a diffraction ring 3 is arranged below a collimating lens assembly, a black light absorption coating is coated on the diffraction ring 3, and when laser beams pass through the collimation lens 2, laser beams pass through the diffraction ring 3, useless stray light is absorbed by the diffraction ring 3, so that the effect of laser diffraction is achieved.
Drawings
Fig. 1 is a cross-sectional view showing the structure of a device for preventing laser diffraction light according to the present utility model.
Fig. 2 is a structural view of the device for preventing laser diffraction light according to the present utility model.
Fig. 3 is an exploded view of the device for preventing laser diffraction light of the present utility model.
Fig. 4 is a structural view of a diffraction ring of the apparatus for preventing laser diffraction light of the present utility model.
Description of the main reference signs
The utility model will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
FIG. 1 is a cross-sectional view showing the structure of a device for preventing laser diffraction light according to the present utility model; as shown in fig. 2, the structure of the device for preventing laser diffraction light according to the present utility model is shown; FIG. 3 is an exploded view of the device for preventing laser diffraction light according to the present utility model; as shown in fig. 4, a diffraction ring of the apparatus for preventing laser diffraction light according to the present utility model is structured.
The utility model provides a device of preventing laser diffraction light, includes the collimating lens subassembly, and the collimating lens subassembly includes collimating lens cavity 1, the inside collimating lens 2 that is equipped with of collimating lens cavity 1, its characterized in that: the lower part of the collimating lens 2 is provided with a diffraction ring 3, and when the laser beam passes through the collimating lens 2 to reach the diffraction ring 3, the diffraction ring 3 absorbs the useless stray light of the laser beam.
The diffraction ring 3 is coated with a black light-absorbing coating.
The collimating lens cavity 1 is a hollow cavity, a lens cone 5 is arranged in the hollow cavity, a collimating lens 2 is arranged on the lens cone 5, and the diffraction ring 3 is positioned at the lower part of the lens cone 5.
The light-deriving ring 3 is of a hollow ring structure, and a connecting block 4 is arranged at one end of the light-deriving ring 3.
The back of the collimating mirror cavity 1 is provided with a waterway plate 8, a pressing block 9 is arranged at the position, close to the diffraction ring 3, of the waterway plate 8, and the connecting block 4 is positioned at the lower part of the pressing block 9 and is locked with the pressing block 9.
The lower part of the collimating mirror cavity 1 is provided with a focusing mirror cavity 6, and the focusing mirror cavity 6 is of a hollow structure.
The top of the focusing lens cavity 6 is provided with a focusing lens cavity upper cover 7, and the collimating lens cavity 1 is connected with the focusing lens cavity 6 through the focusing lens cavity upper cover 7.
The focusing mirror cavity upper cover 7 is of a hollow structure, the diffraction ring 3 is positioned on the focusing mirror cavity upper cover 7, and the center of the hollow structure of the diffraction ring 3 and the center of the hollow structure of the focusing mirror cavity upper cover 7 are positioned on the same axis.
The connecting block 4 is locked with the pressing block 9 through a screw or a bolt, and the focusing lens cavity upper cover 7 is locked with the connecting block 4 through a screw or a bolt.
The beneficial effects of the utility model are as follows: the utility model provides a device for preventing laser diffraction light, which is characterized in that a diffraction ring 3 is arranged below a collimating lens assembly, a black light absorption coating is coated on the diffraction ring 3, and when laser beams pass through the collimation lens 2, laser beams pass through the diffraction ring 3, useless stray light is absorbed by the diffraction ring 3, so that the effect of laser diffraction is achieved.
The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. The utility model provides a device of preventing laser diffraction light, includes the collimating lens subassembly, and the collimating lens subassembly includes collimating lens cavity (1), the inside collimating lens piece (2) that are equipped with of collimating lens cavity (1), its characterized in that: the lower part of the collimating lens (2) is provided with a diffraction ring (3), and when laser beams come to the diffraction ring (3) through the collimating lens (2), the diffraction ring (3) absorbs useless stray light of the laser beams.
2. The apparatus for preventing laser diffraction light as defined in claim 1, wherein: the diffraction ring (3) is coated with a black light-absorbing coating.
3. The apparatus for preventing laser diffraction light as defined in claim 1, wherein: the collimating lens cavity (1) is a hollow cavity, a lens barrel (5) is arranged in the hollow cavity, a collimating lens (2) is arranged on the lens barrel (5), and the diffraction ring (3) is positioned at the lower part of the lens barrel (5).
4. The apparatus for preventing laser diffraction light as defined in claim 1, wherein: the light-deriving ring (3) is of a hollow ring structure, and one end of the light-deriving ring (3) is provided with a connecting block (4).
5. The apparatus for preventing laser diffraction light as claimed in claim 4, wherein: the back of the collimating mirror cavity (1) is provided with a waterway plate (8), a pressing block (9) is arranged at the waterway plate (8) close to the diffraction ring (3), and the connecting block (4) is positioned at the lower part of the pressing block (9) and is locked with the pressing block (9).
6. The apparatus for preventing laser diffraction light as defined in claim 1, wherein: the lower part of the collimating mirror cavity (1) is provided with a focusing mirror cavity (6), and the focusing mirror cavity (6) is of a hollow structure.
7. The apparatus for preventing laser diffraction light as defined in claim 1, wherein: the top of the focusing mirror cavity (6) is provided with a focusing mirror cavity upper cover (7), and the collimating mirror cavity (1) is connected with the focusing mirror cavity (6) through the focusing mirror cavity upper cover (7).
8. The apparatus for preventing laser diffraction light as claimed in claim 7, wherein: the focusing mirror cavity upper cover (7) is of a hollow structure, the diffraction ring (3) is positioned on the focusing mirror cavity upper cover (7), and the center of the hollow structure of the diffraction ring (3) and the center of the hollow structure of the focusing mirror cavity upper cover (7) are positioned on the same axis.
9. The apparatus for preventing laser diffraction light as claimed in claim 4, wherein: the connecting block (4) is locked with the pressing block (9) through a screw or a bolt.
10. The apparatus for preventing laser diffraction light as claimed in claim 8, wherein: the upper cover (7) of the focusing lens cavity is locked with the connecting block (4) through screws or bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122428607.8U CN219026346U (en) | 2021-10-09 | 2021-10-09 | Device for preventing laser diffraction light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122428607.8U CN219026346U (en) | 2021-10-09 | 2021-10-09 | Device for preventing laser diffraction light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219026346U true CN219026346U (en) | 2023-05-16 |
Family
ID=86292310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122428607.8U Active CN219026346U (en) | 2021-10-09 | 2021-10-09 | Device for preventing laser diffraction light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219026346U (en) |
-
2021
- 2021-10-09 CN CN202122428607.8U patent/CN219026346U/en active Active
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