A visor is a protective covering that shields the eyes, historically found on helmets and headgear, evolving from opaque masks to transparent shields. Medieval texts like Geoffrey Chaucer’s Works describe visors as movable components of helmets that allow vision, while Albert Frederick Calvert’s Spanish Arms and Armour outlines their role in knightly equipment, focusing on their design in jousting gear.
Dion Williams’ Army and Navy Uniforms emphasizes their ceremonial use in military salutes. From armor to contemporary sun visors, the concept highlights a dual purpose: practical defense and symbolic prestige, as illustrated in historical records and technical analyses.