Positive pressure impact resistant lens for improved vision and safety

摘要

An impact resistant positive pressure lens is utilized in conjunction with safety goggles or incorporated in a full face mask with a breathing apparatus. The lens protects the wearer from being struck by foreign objects as well as keeping paint over spray, chemicals, grindings and airborne particulate material form adhering to the surface of the lens. The lens consists of a first lens integrally formed with an air inlet chamber to effect an air flow through and out a second lens that is provided with air nozzles. The air nozzles direct the flow of air forward of the second lens and a point at the forward most edge of the shroud, thereby, peventing paint overspray, chemicals, grindings and airborne particulate material from adhering to the second lens.