Lummer, O. (Otto), 1860-1925, Thompson, Silvanus P. (Silvanus Phillips), 1851-1916 · London, New York, Macmillan and Co., 1900 · leaf 94
LUMMER’S PHOTOGRAPHIC OPTICS 78 CHAP. 1*52, 1'61, 1’51. In order to attain the greatest intensity, the first or outermost lens must have the highest refractivity, … Fig. 22a. — Goerz’s Double Anastig- meet it at as small a refracting inat, Series Ila. angle as possible, otherwise there would be accumulated distorting effects that could not be com- pensated by the subsequent refractions. To fulfil the anastig- niatic condition are provided the fourth and fifth…
Photographic optics
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