Lummer, O. (Otto), 1860-1925, Thompson, Silvanus P. (Silvanus Phillips), 1851-1916 · London, New York, Macmillan and Co., 1900 · leaf 72
LUMMER’S PHOTOGRAPHIC OPTICS 56 CHAP. VIII component of the Boss’s Concentric lens designed by Dr. … Fig. 11. — Achromat used in matic} and expressly so in order to Concentric Lens. afford to the two other members of the antiplanet very strong aberrations of opposite kinds. ^ More chromatic, therefore, than the equivalent single glass lens.
Photographic optics
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