Focus on Laser & Optical Systems
After months of hard work and dedication, we are thrilled to announce that we have finally assembled the MVP! But our job doesn't end here - in fact, it's only just beginning. As we move forward with the production process, our focus is on ensuring that every detail is perfect.
One of the first major tasks we're undertaking is the calibration of the laser and optical systems. This is a crucial step in ensuring that our metal 3D printing technology provides the highest level of precision and accuracy possible. Our team is working tirelessly to ensure that every aspect of the printing process is fine-tuned to perfection.
What does that mean?
When you think of lasers, you think of laser pointers with a straight beam of light, and you would be right. With high powered lasers, however, the beam of light starts divergent, and a collimator is used to make the beam parallel. The diameter of the beam is 10 millimeters before entering the galvo-scanner.
The galvo-scanner is a highly accurate mechanical-optical system that consists of mirrors and lenses. There are two mirrors, which rotate along the path of the laser beam, to direct the beam to the work surface. Each of the two mirrors can account of either X-axis or Y-axis of the surface.
The beam diameter of 10 millimeters does not have enough energy over area to quickly melt metal however, therefore the beam will need to be focused to a miniscule 10 to 100 micrometers.
The galvo-scanner will need to convert the parallel beam into a convergent beam. Convergent, means that it will reach the minimum focus length of 33 micrometers, in our case, on a single plane in space, and we need to ensure that plane coincides with the work surface. This task is performed by a separate Z-axis lens, that changes the location of the focus plane, and ensures that the plane where maximum focus is reached, 33 micrometers in our case, is flat.
The calibration process ensures that everything is working according to specification. It is performed both on hardware, with lenses being moved in the right position, and with software, to achieve the micrometer accuracy that is needed. To test the accuracy, a mesh pattern is burned off on a black cardboard sheet, specifically created for this task.
We understand that our customers demand the best, which is why we're leaving no stone unturned in the pursuit of excellence. Our commitment to quality is unwavering, and we're dedicated to delivering a product that exceeds all expectations. Stay tuned for more updates on our progress, and thank you for your continued support!