Optic studies of Roger Bacon, O.F.M. (c. A.D. 1214–1294).
Roger Bacon's circular diagrams relating to the scientific study of optics. By Roger Bacon also Saint Germaine, late 13th Century.
Roger Bacon http://www.famousinventors.org/roger-bacon
In 13th-century England Roger Bacon described the use of a camera obscura for the safe observation of solar eclipses, exactly because the viewer looks at the projected image and not the sun itself.
Roger Bacon from Maier Symbola aurea mensae, Franckfurt, 1617.
Roger Bacon's circular diagrams relating to the scientific study of optics
(FRIAR BACON AND FRIAR BUNGAY). Roger Bacon (1214-1294) - a brief biography.
LA PIERRE PHILOSOPHALE ROGER BACON - Rosa mystica