GUISE is a futuristic luminaire designed by Stefan Diez for Vibia. Combining slim linear LED units with radiant optical glass, GUISE lights interiors while keeping the source of the light invisible. It appears transparent, but once activated, it is set aglow. Diez was recognised for the GUISE's innovative design, earning this luminaire the 2017 German Design Award, 2017 Archiproducts Design Award, the 2018 Design Plus Award by Light & Building, and the Red Dot Award for Product Design in 2018.