Signet Armorlite is an optical products company located in San Marcos, Calif., where its manufacturing and United States distribution center reside. The company is the originator of the plastic eyeglass lens and has manufactured ophthalmic lenses in California for more than 50 years. In addition, glass lenses and molds are designed and produced at Crossbows Optical, a wholly-owned subsidiary located in Northern Ireland. Signet distributes products throughout Europe from two distribution centers and four optical laboratories located in England, Germany, Spain and the Netherlands. Signet has the exclusive distributorship for KODAK Lenses worldwide, and produces progressive, single vision and bifocal lenses. Signet also has exclusive distributorship for 3M adhesive optical supply products in the United States.