Valencia Eyewear

No one really knows about the early history of image magnification. In ancient times, someone noticed that convex-shaped glass magnified images. Sometime between the year 1000 and 1250 crude technololgy started to evolve regarding reading stones (simple magnifiers) English Franciscan Friar Roger Bacon (1220-1292) in his 1268 'Opus Majus' noted that letters could be seen better and bigger when viewed through less than half a sphere of glass. Bacon's experiments confirmed the principle of the convex (converging) lens, described by Alhazen (965-1038)