what is the reflective glass on a spacesuit called

The reflective glass covering on an astronauts spacesuit is called a visor. The visor is an assembly that slips over the helmet, protecting the eyes, face, and head from sunlight. Visor assemblies often have a pull-down, tinted sunshade to reduce glare, much like sunglasses. The visor is made of clear plastic or durable polycarbonate and has coverings to reflect sunlight. In some spacesuit helmets, there is a thin gold coating on the glass that blocks thermal IR but transmits visible light.