How to choose suitable laser beam expander, field mirror and

How to choose suitable laser beam expander, field mirror and galvanometer mirror?

First, the following questions need to be clarifying:

1. what is the laser wavelength?

The CO2 laser produces a wavelength of 10.6 um, a metal of 1064 nm, and other lasers such as 355 nm, 532 nm.

2. do you need to replace accessories, upgrade accessories, or assemble machines?

3. if it is a replacement parts

It is better to choose the same specifications as your original machine. If you can find the relevant specifications on the lens nameplate, or provide photos, we can provide you with the corresponding specifications.

4. if no specifications can be found

Need to upgrade accessories or reassemble the machine, beam expander, galvanometer, field mirror between the need to follow the following rules.

First of all, you need to understand a few terms, so that you can better understand the principle of knowledge: beam expander diameter O1, that is, the laser beam after the beam expander enlarged the spot diameter. This is not the same concept as the aperture A1 of the beam expander. The aperture A1 of the beam expander is the largest laser spot through which the beam can pass. The relationship between A1 and O1 is A1 >= O1.

The diameter of the incident spot of the mirror is I2, that is, the spot diameter of the laser entering the mirror.

The diameter of the incident spot of the field lens is I3, that is, the spot diameter of the laser entry lens.

The most important function of beam expander, mirror and field lens should be O1=I2=I3..