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Adaptive Optics for Biological Imaging
book

Adaptive Optics for Biological Imaging

by Joel A Kubby
April 2013
Intermediate to advanced content levelIntermediate to advanced
388 pages
16h 6m
English
CRC Press
Content preview from Adaptive Optics for Biological Imaging
34 Principles
We can apply the paraxial approximation (Equation 2.4) to nd the length VQ:
R QC
QC
h
R
R QC VQ
h
R
= +
= +
= =
3
2
2
2
2
Substituting for VQ then gives
n
s
n
s
n n
R
1
1
2
2
2 1
+ =
( )
Consider what happens when the distance s
1
becomes very large, that is, for an object at a very long
distance. In the limit that s
1
∞, we have
n
s
n n
R
s
n R
n n
f
2
2
2 1
2
2
2 1
=
( )
=
( )
= '
Here, the light comes to a focus at a set distance f into the media with index n
2
. is is dened as the
focal point within medium 2. Since the light is coming from innity, the light rays would be parallel and
the wavefronts would be plane waves. If s
2
∞, we have
n
s
n n
R
s
n R
n n
f
1
1
2 1
1
1
2
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Publisher Resources

ISBN: 9781439850190