US Patent 7722187 Fly-wing rotating lens eyeglasses

A spectacle frame and lens arrangement whereby each lens rotates up and out of the field of vision by pivoting about a central pivot mechanism in the frame which keeps the lenses within the same plane both in the park and use positions. This differs from traditional flip-up spectacles that operate by causing the lens to fold up and forward from the user's eyes or outward to each side. This is accomplished by a simple squeeze of the frame and lower edge of a single lens between the forefinger and thumb of one hand.