Laurence, Lionel · London, School of Optics · leaf 165
ns must be situated to replace the combinationfor light coming from the side of L2. Thus it will be seen thatP1 orP2 corresponds to the refracting plane of asingle thin lens, since all refraction appears to take place on either Px orP2depending upon the direction of the light. El and E2 likewise… … Fig. 165. In Fig. 165,Px andP2 are the equivalent planes, Ex and E2 the equivalentpoints, Fx and F2 the principal foci, R Fx and Q F2 the focal planes. Letan oblique parallel beam, of which M is the secondary axis, fall on Lv Theray M E\ directed towards Ex is bent towards the axis by Lv but is…
Optics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
