Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1907)
Prentice, Charles F. (Charles Frederick), b. 1854 · Philadelphia : Keystone · leaf 23
prismatic section (Fig.2), each succeeding point 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, v, i* the correspondingradial lines at the points, e-, e^, e* in this… … Fig. 8.Plano-convex section. In the so-called plano-convex lens. Fig. 8, the converging final rays f, f,p, corresponding to the more central incident parallel rays i^, i, i* estab-lish points n^, n^, n to infinity, and possess the remarkable feature of inter-secting each other at a common point F,…
Lenses · Prisms (Ophthalmology)
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