The core activity of Lumartix SA is the development and manufacture of solar simulators and light technologies that replicate natural sunlight. These products are used primarily for research and development of solar cells, testing and aging of solar modules, as well as for lighting in various applications. The company offers a range of products, including the Lumixo-S, Lumixo-CORE, Sunirad, and Solixon series, all of which are designed to reproduce sunlight and meet a variety of requirements in solar and light technology.