Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1900)
Prentice, Charles Frederick, b. 1854 · Philadelphia : Keystone · leaf 25
prismatic section (Fig.2), each succeeding jDoint e^ e^, e* (Fig. 8) may be considered as one of aprism varying in its angle a-, a?, a* with that of its predecessor; and if theconstruction be carried out for each incident ray i^ i^, i* the correspondingradial lines at the points, e~, e^, e^ in this… … Plano-convex section. In the so-called plano-convex lens. Fig. 8, the converging final rays /, /**,p, corresponding to the more central incident parallel rays i^, t% P* estab-lish points n^, n^, n^ to infinity, and possess the remarkable feature of inter-secting each other at a common point F,…
Lenses
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