Genuine sunglasses of US Air Force and US Navy !
Today considered as a classic form, sunglasses Aviator are characterized primarily by its "bayonet" branches, suitable for wearing under a helmet, and its rectangular lenses with rounded edges. The nose pads are self-adjusting (today, it seems obvious), and hinges are also rounded, to avoid collision with various pieces of equipment. The patented self-locking screws and special alloy complete the frames feature. The quality of frames is so high, that the welds have a life guarantee !
But the lenses them selfs are also of interest. Made of optical quality glass to avoid distortion, they are hardened and individually tested by impact of a steel ball dropped from a height of 1.27 m (this height, bizarre in Europe, is simply a metric matching of 50-inch).
These lenses meet the following requirements: maximum UV absorption (standard ANSI Z-803), designed to eliminate the direct and indirect glare, prepared and polished to specific anti-distortion standards ; OVST (optimal visible spectrum transmission) - in conditions of strong brightness the "darkness" of lenses allow only 10-18% of light to pass through (an ideal comfort level for most users), impact resistance tested individually.
Model: AF5-4668 / AF158
Frame finish : matt chrome
Lenses color : Atlantic Blue - blue mirror (non-polarised)
Size : lenses diameter 55 mm
Bridge (distance between lences) : 20 mm
Frame width : 135 mm
Availability: on order only (delivery time : between one and four weeks)