The Ray-Ban sunglasses story begins with an explorer called, Lieutenant John MacCready, who after returning from a balloon flying adventure, complained that his eyes are affected by the permanently harmful sun glare. He got in touch with Bausch & Lomb (the founders of Ray-Ban) setting them the challenge to engineer sunglasses that would offer protection but also look stylish. On May 7, 1937, Bausch & Lomb took out the patent. The prototype, known as "Anti-Glare", had an ultra-light frame weighing in at just 150 grams. They were constructed of gold-plated metal with green lenses constructed of mineral glass to block out infrared and UV rays.