Natural lighting by optical fiber 🌝💡♻️ This is solar concentrator or a sunlight collector, which is part of a natural lighting system. These systems use mirrors or lenses to concentrate sunlight, which is then transmitted via optical fibers into a building's interior to provide natural lighting. The description in the video "Natural lighting by optical fiber" confirms this, suggesting it is a sustainable way to bring natural light indoors, reducing the need for artificial lighting and saving e