XEE4150989: Light Door Applies to Photography invented by Edouard Delessert (1828-1898). The mirror reflects the sun's rays and returns them to a lens that reunites them in a beam to make them converge on a cliche whose image, reproduced by a Daguerre camera, is fixed in the desired size on a prepared paper. Engraving in “” Le Monde Illustré”” n°232 of September 21, 1861., French School, (19th century) / Bridgeman Images