Question

1. (20pts) Figure 1 shows a thick lens. (a) Introduce the system matrix M from surface Ri to surface R2. (b) If the thickness is negligible t- 0 and the lens is surounded by the same material n', find the focal length for this thin lens. (c) Figure 2 show an by a distance L. Find the system matrix and the equivalent focal length feq optical system consists of two thin lenses(focal length fa.fa) in air, separated fA ft R, I R H, N, H, N, Fig. 2 L- RP Fig. 1 RP2

Answer 1

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The P2t - L mlal plan Phe distance mea plau anher T distae ot See nL plar f mule a then, gives eqhaton dwith

Henle (Pi+), 221 2 PtPZ D2 Y hen ( P in ! R2 Lens foma n CS. Scanned with CamScanner

matrix Jiven by -tAin len's S thin C6) CA C the Camlanat n_ The matix Con figuraten the fjre2 in SA San Cs dine to lns AY tave aitwan te TA TR L thun ES Scanned with mScanner

L A d. L atready bseved Cieg in h yI inverse have A& we element Ca he tne rapresaes matrx fcal Leugth ta systen the foCal ength tne Thuo Com ginahon a Cs Scanned with CamScanner