405nm Violet Dot Laser Module Applied for Micro-area Optics Experiments In process of clear and precise dot indication for micro area optics experiments, professionals and engineers prefer to adopt a Berlinlasers 405nm violet dot laser module. Featured by compact size and durable structure design, combined with microscopes and microscopic optical systems, violet laser dot alignment enables pinpoint illumination and spot marking of small areas for micro/nano optics and surface optics experiments. https://www.berlinlasers.com/405nm-violet-dot-laser-module