F-theta lens for battery production


S4LFT3350-292 was developed as part of the Next-Gen-3D-Bat project. The research focused on the production of modern lithium-ion batteries with particularly high performance and a long service life.

The lens was used to apply large-area microstructures to cell components in order to improve wettability with a liquid electrolyte and thus increase cell performance. To maximize the process speed, the DLIP method was used, in which the superposition of two parallel input beams next to the focal plane is used. The lens with a focal length of 350.5 mm is suitable for a large diameter input beam of 21 mm, which contains the two parallel DLIP beams. In addition, the scan field of 200 mm x 200 mm is very large to ensure a high production speed.

As ultra-short pulsed lasers were required for micro structuring the cell components in this research project, the S4LFT3350-292 is a fused silica lens that is also suitable for lasers with pulse durations in the femtosecond range.

The S4LFT3350-292 was developed for a green laser with a wavelength of 515 nm. A similar lens was also built for the infrared range. If you need a lens for a similar application or want to use a lens with such specifications in a completely different market, please do not hesitate to contact us.

More information can be found here: Highlights 2024