The manufacturing process from the motif to the finished, lasered product with laser engraving involves several development stages. We describe the steps relevant for our customers in our design process. Here we would like to briefly explain the technical side in addition.
A point cloud (laser dataset) is generated based on a motif (photo, graphic, logo or 3D file) after various preliminary work and with the help of special software. Generating the point cloud for 3D objects involves several steps. The 3D point cloud is usually comprised of several hundred thousand points distributed in an X-Y-Z coordinate system.
The laser operating software uses this point cloud to calculate the respective lasering process per motif, which takes a varying amount of time depending on the number of points and the extent of the point cloud. Then the laser beam is generated in the laser diode module, conducted into the laser head, and leaves the objective lens as a light ray bundle after being deflected by several mirrors.
This light beam is able to penetrate the stress-free glass surface and is focused in the respective laser point of the X-Y-Z position. Tiny changes are produced in the glass material as a result – star-shaped cracks in the micrometre range. They alter the composition of the glass and, by changing the refraction of light, make the lasered point and subsequently the entire motif visible.
We use precision laser equipment with a diode-pumped solid state laser and a wavelength of 532nm for our 2D and 3D glass engravings. The laser produces a green light (green laser) that, compared to a red laser with a wavelength of 1064nm, generates laser points with a much higher resolution and is therefore able to process our highly detailed phenolux crystal engraving extremely well.