JPS5855662Y2 - Reflector for high power laser - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a high-output laser reflector with an improved cooling structure.

Reflector mirrors for high-power lasers are affected by the laser beam and reach high temperatures.
A space was formed inside the tank, and cooling water was allowed to flow into this space.

In order to improve the cooling effect, it is desirable to reduce the thickness T of the main body a, but due to its strength, it may deform during processing of the mirror surface C, or the receiver may be deformed by the pressure of cold water, degrading its performance as a reflector. There were drawbacks.

This idea was devised in consideration of the above circumstances, and its purpose was to fill the space inside the reflector with a porous sintered body to allow cooling water to flow freely and to improve the The present invention aims to provide a high-output laser reflector that improves the intensity.

An embodiment of this invention will be described below with reference to the accompanying drawings.

1 in Fig. 2 is a reflecting mirror main body, and the surface of this main body 1 is a mirror surface 2.
It becomes.

A back plate 3 is screwed onto the opposite side of the mirror surface 2 via an O-ring 4.

A cooling water supply port 5 and a drain port 6 are attached to the back plate 3 to allow cooling water to flow inside the space of the main body 1.

A porous sintered body 7 is formed by filling the space of the main body 1 with bronze particles and then firing under pressure to form a porous sintered body 7 that is integrated with the main body 1, so that cooling water can pass between the particles. It has become.

In addition, in the above example, about 80 bronze particles were used.
Although the material is sintered at 0.degree. C., it is not limited to bronze, and in consideration of the relationship with the material of the reflecting mirror body 1, stainless steel, titanium, ceramics, or the like may be used.

Next, FIG. 3 shows another embodiment, in which a spiral flow channel 8 is formed in the sintered body 7.

That is, after forming the main body 1 into a spiral shape and inserting a thin plate 9 made of the same material as the particles of the sintered body 7, the material particles are filled inside the main body 1 and fired under pressure. Good flow improves cooling efficiency.

Further, in this case, if the material of the particles is copper, which has good thermal conductivity, the cooling efficiency will be further improved.

Next, FIG. 4 shows still another embodiment.

That is, relatively large particles 10 are placed inside the main body 1 on the mirror surface 2 side, and relatively small particles 11 are placed on the back plate 3 side, and then sintered. This improves the cooling efficiency of the mirror surface 2 and also improves the cooling efficiency of the main body 1.
The strength of can be increased.

Next, FIG. 5 shows a modification of FIG. 3.

That is, after charging a linear thin plate 12 made of the same material as the sintered body 7 into the main body 1, and after charging and sintering the particles,
A back plate (not shown) having a water supply port body 5 and a drain port body 6.

) is installed to allow cooling water to flow in the direction shown by the arrow, increasing the cooling effect.

Moreover, FIGS. 6 to 8 show still another embodiment.

That is, as shown in FIG.
After inserting the cylindrical body 13 provided with the cylindrical body 13 a and the cutout portions 13 b , a through hole 14 a is formed around the cylindrical body 13 . . . . and the notch portion 14b . . . The cylindrical body 14 is inserted.

First, relatively large particles 10 of sintered material are placed between the cylindrical bodies 13 and 14, and relatively large particles 10 are placed on top of the particles 10. If small particles 11 are added and sintered, large particles 10 will be placed on the side closer to the mirror surface 2.
A sintered body 7 in which small particles 11 are arranged is sintered integrally with the main body 1 on the side far from the main body 1, and an inlet 15 is formed in the center.

At the periphery of this inlet 15, there is a running water outlet 14a...
..., 14b... are formed.

Further, an annular drain groove 16 is formed between the main body 1 and the peripheral edge 7a of the sintered body 7.

Further, on the peripheral edge 7a of the sintered body 7, a water outlet 13a...
. . , 13b . . . are formed.

A back plate 3 having a water supply port body 5 at the center and a drain port body 6 at a position matching the drain groove 16 is attached to the main body 1.

As in the above embodiment, the cold water flowing into the main body 1 from the water flow port 15 at the center of the main body 1 flows radially into the water outlet 13a...
. . , 13b .

As explained above, in this invention, a porous sintered body is filled inside the space of the main body for a high-power laser, and cold water is allowed to flow inside this sintered body, so that the deformation of the mirror surface is prevented. This has the practical effect of being able to prevent this and improve cooling efficiency.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of a conventional reflector for high-power lasers, Figure 2
The figure is a longitudinal sectional view of one embodiment of this invention, FIG. 3 is a plan view showing another embodiment of this invention, FIG. 4 is a longitudinal sectional view of another embodiment of this invention, and FIG. 6 to 8 are plan views showing other embodiments of this invention, FIG. 6 is a plan view, FIG. 7 is a perspective view, and FIG. The figure is a longitudinal sectional view. 1... Reflector body, 7... Porous sintered body.

Claims (1)

[Scope of utility model registration request] A reflector for a high-output laser, characterized in that a space in the reflector body is filled with a porous sintered body, and a cooling liquid is allowed to flow between the particles of the porous sintered body. mirror.