Handbook of optics for students of ophthalmology (1899)
Souter, William Norwood, 1961-1935 · New York, Macmillan · leaf 83
side of the axis.Hence to find these planes in a system of refracting THE EYE AS AN OPTICAL SYSTEM 73 surfaces, it is evident that we may use, equation (5),which expresses the relation between conjugate foci.If, in this equation, we impose the condition thatobject and image be of the same size and… … Fig. 22. In Fig. 22 let PR represent an imaginary raydirected toward E. After refraction through thesystem it appears to pass through FJ ; then 77 andE are conjugate foci. Let F mark the position ofthe anterior, and F the position of the posteriorfocus of the system ; then Fff=-; imdHF= - VJ•k k 74…
Eye · Lenses
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