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, galvo scanner, f-theta lens 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 scanner is I2, that is, the spot diameter of the laser entering the mirror.
The diameter of the incident spot of the f-theta lens is I3, that is, the spot diameter of the
f-theta lens.
The most important function of beam expander galvo scanner and field lens should be O1=I2=I3.
That is to say, the beam expander's output diameter O1 and the through aperture I2 of the seismoscope, and the f-theta lens incident spot diameter I3 should be the same.
If not, what's the problem?
If O1> and I2, galvo scanner will appear to shield part of the laser light, resulting in power loss.And so if I2 >I3.
If O1<I2, the function of galvo scanner will be weakened.As the incident spot of the galvo scanner becomes larger, the speed will decrease, leading to the weakening of the marking speed. And so if I2 <I3.
