Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1900)
Prentice, Charles Frederick, b. 1854 · Philadelphia : Keystone · leaf 61
lents can only be produced when the numerals of the formulx coincide with those Included in the adopted dioptral series, page 47.For crossed cylinders having the axes of the concave cylinder at 180 and of the convex cylinder at go° it is merely necessary to reverse the axes throughout. SECTION II… … I. DIOPTRIC FORMUL/E FOR COMBINED CONGENERIC CYLINDRICAL LENSES. 1. RELATIVE POSITIONS OF THE PRIMARY AND SECONDARYPLANES OF REFRACTION. In the following theorems, a prior knowledge of the established mathe-matical deductions applied to lenses for parallel rays incident in theimmediate vicinity of…
Lenses
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
