A dome mirror is a device that is spherical in shape with a curved (convex) design and a reflective film coating on either an acrylic or unbreakable (polycarbonate, Duramir or PETG) surface used for observation, monitoring, surveillance, safety and security purposes. The term dome mirror is more of a broad term or description as there three distinct types of a dome mirror; full dome mirror, half dome mirror and a quarter dome mirror.