4) Show that the ABCD matrix for a thick lens can be derived by sandwiching a window between two thin lenses. HINT: All relevant formulas appear in our books. Let the thin lenses each have a planar side adjacent to the window. Using this gives focal lengths 1 n-1 and 1 = where R1 is the radius of the first surface of lens 1, and R2 is the f1 R1 f2 R2 = 1-n radius of the second surface of lens 2 (negative if convex). The refractive index of the lens material is n.

Question
4) Show that the ABCD matrix for a thick lens can be derived by sandwiching a window
between two thin lenses. HINT: All relevant formulas appear in our books. Let the thin
lenses each have a planar side adjacent to the window. Using this gives focal lengths
1 n-1
and 1
= where R1 is the radius of the first surface of lens 1, and R2 is the
f1 R1 f2 R2
=
1-n
radius of the second surface of lens 2 (negative if convex). The refractive index of the
lens material is n.
Transcribed Image Text:4) Show that the ABCD matrix for a thick lens can be derived by sandwiching a window between two thin lenses. HINT: All relevant formulas appear in our books. Let the thin lenses each have a planar side adjacent to the window. Using this gives focal lengths 1 n-1 and 1 = where R1 is the radius of the first surface of lens 1, and R2 is the f1 R1 f2 R2 = 1-n radius of the second surface of lens 2 (negative if convex). The refractive index of the lens material is n.
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