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Optics for Engineers
book

Optics for Engineers

by Charles A. DiMarzio
August 2011
Intermediate to advanced content levelIntermediate to advanced
564 pages
20h 45m
English
CRC Press
Content preview from Optics for Engineers
116 OPTICS FOR ENGINEERS
In the triangle shown by solid lines in Figure 5.3A, the height is the half-length of the minor
axis, b, the base is half the distance between S and S
, and the hypotenuse is half the total
optical path, so
b
2
=
s +s
2
2
s s
2
2
= ss
. (5.17)
This mirror is the perfect choice to image the point S to the point S
. For these two conjugate
points, there are no aberrations. We note for later use that we can dene the focal length from
the lens equation (Equation 2.51 in air) by
1
f
=
1
s
+
1
s
=
s
+s
s
s
=
2a
b
2
f =
b
2
2a
. (5.18)
Summarizing the equations for the ellipsoidal mirror,
z a
a
2
+
x
b
2
+
y
b
2
= 1 a =
s +s
2
b =
ss
. (5.19)
For s = s
, the ...
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Publisher Resources

ISBN: 9781439807255