January 2015
Beginner to intermediate
368 pages
12h 25m
English
Content preview from Building Earth Observation Cameras
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261Hyperspectral Imaging
mN
=
λ
λ
=
RP
(8.6)
The resolving power depends on the order number, m, and the number of
lines, N, on the grating (total number of grooves illuminated on the surface
of the grating).
The gratings can be realized to operate in transmission or reection mode.
Plane reection grating helps to reduce the system dimension by suitably
steering the beam, whereas reective grating with power (concave/convex
grating) can be used as a powered component in optical design. Thus, grat-
ing can be used as an optical component to simplify overall optical design.
In addition, grating has linear dispersion and broader spectral coverage
comp ...