Laurence, Lionel · London, School of Optics · leaf 104
pal axis and cuts the second focal plane in D. Connect D and Eand produce to A on the principal axis; then A is the virtual image of A. A V - =-* F ^<^^^J V ^ p^ L ^^ B Fig. 1 01. Course of Light—Cc. Lens.—If a beam of light parallel to the axis (Fig. 101),is incident on a Cc. lens, they… … Fig. 102. Construction of I for Cc. Lens.—The rays (a) and (b) given for the construc-tion with a Cx. lens serve also for a Cc, but (b) diverges. From A (Fig. 102)trace A 0, the secondary axial ray. Draw A E parallel to the axis and re-fracted as if diverging from F. These rays appear to diverge,…
Optics
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