Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1900)
Prentice, Charles Frederick, b. 1854 · Philadelphia : Keystone · leaf 89
ious considerations we therefore here also find : 14. Tlie positive and negative focal planes are conjugateplanes, subject to variations of the angle between the axes ofthe contra-generic cylinders. The diagram, Plate III, has been constructed in accordance with theforegoing provisions. For… … III. DIOPTRAL* FORMUL/E FOR COMBINED CYLINDRICAL LENSES. I. RELATION BETWEEN THE PRINCIPAL PLANES OF REFRAC-TION AND THE REFRACTIVE POWERSOF THE CYLINDERS. As the task of YeAucm^ diopifies to their focal distances would rendercalculation by the j^receding formulae somewhat arduous, we may heregive…
Lenses
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