Definition - What does Visor mean?
A visor, or face shield, is a heat-reflecting or wire screen that provides protection to the face. It is considered a secondary form of protection, meaning that it does not provide adequate protection on its own but must be used with primary protective equipment, such as goggles or safety glasses.
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Safeopedia explains Visor
Visors provide full face protection and have transparent windows that can be constructed from a wide variety of materials and in a variety of thicknesses depending on the specific task or tasks they are designed for. Visors are generally used to protect the face against heat hazards, including radiant heat, molten metal splashes, and flying sparks.
Health and safety professionals should determine the correct specifications for a visor based on the task to be performed and the hazards encountered in the course of the work. They should also ensure that the products they chose are ANSI certified.
Specialized visors are also available, including those that are constructed specifically for arc flash protection, welding, and heat and radiation protection.