Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1900)
Prentice, Charles Frederick, b. 1854 · Philadelphia : Keystone · leaf 151
s of the lens mustcoincide. 3. Oblique Pencils.—In any case where the axis of the incident coneof light does not coincide with the normals to the surfaces of the refractingmedium, whether it be a lens, prism or plate, the refracted pencil will nolonger be a circular cone of light; but, it will be a… … The same laws apply to the reflection by spherical surfaces of direct andoblique incident pencils of light, and their mathematical elucidation isgiven by Profs. R. S. Heath and W. Steadman Aldis, in their recentexhaustive treatises on Geometrical Optics. In illustration of the above definitions,…
Lenses
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