Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine (1914)

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\ BRIEF HISTORICAL SUMMARY 2. Projection Microscope 679 As pointed out in the text (p. 221), the projection microscope is only a magic lantern with a relatively short focus projection objective. The screen image is therefore correspondingly larger than with the magic lantern. The first magic lantern described (1665) was recognized as a kind of microscope by Milliet de Chales, for he says in the description: "rricroscopium FIG. 407. CHRISTOPHORO SCHEINER, 1573-1650. Astronomer and Inventor (From the biography by Anton von Braunmuehl, i8pi) Projection Apparatus for Drawing Sun Spots. Demonstrated the Retinal Image. Said the Crystalline Lens of the Eye is Equal to Many Glass Lenses. Invented the Pantograph. habes in hujusmodi machina," vol. ii, p. 667. A few years later (1685), Zahn in his work on all kinds of optical instruments (Oculus Artificialis) , says on p. 255, "Lucerna magica est species microscopii." Both also point out that this kind of a microscope is preferable to the ordinary one as many can see at the same time.