Founded in 1833 by William Beecher and later led by Robert H. Cole, AO supplied more than two million glasses to troops in World War I and provided gun sights, aviation goggles and sunglasses in World War II. In 1935 it produced the first aviator-style sunglasses contracted by the US military, the D-1, and in 1952 it released a cat-eye line with designer Claire McCardell — the first eyewear line by a fashion designer.
After a visit in 1958, AO's Saratoga line became a frequent pair of President John F. Kennedy's, and its Original Pilot — the Type HGU-4/P design — was worn by the entire Apollo 11 crew, with a pair on display at the Smithsonian. Today AO designs and manufactures in the United States, based near Chicago in Vernon Hills, Illinois.