source
lens
Entrance slit Exit slit width, (mm)
grating
Concave mirrors
Focal Plane
Focal Length, F (mm)
(nm)
= slit width (mm)
“Reciprocal Linear Dispersion”
mm
nmunits
dr
dλ
F
1D 1
“Spectral Bandpass, ”
1DωΔλ
= slit width (mm)
V
Wavelength, nm
D-1
ROYGBV
(nm)
= slit width (mm)
B
Wavelength, nm
ROYGBV
D-1
(nm)
= slit width (mm)
G
Wavelength, nm
ROYGBV
D-1
(nm)
= slit width (mm)
Y
Wavelength, nm
ROYGBV
D-1
(nm)
= slit width (mm)
O
Wavelength, nm
ROYGBV
D-1
(nm)
= slit width (mm)
R
Wavelength, nm
ROYGBV
D-1
(nm)
from "Chemical Instrumentation", 2nd ed. by Howard Strobel, 1973
Wavelength, nm
ROYGBV
D-1
Effect of Focal Length, F
= slit width (mm)
Light bandwidth in nm
mm
nmunits
dr
dλ
F
1D 1
Effect of Focal Length, F
= slit width (mm)
Light bandwidth in nm
Effect of Focal Length, F
= slit width (mm)
Light bandwidth in nm
Effect of Focal Length, F
= slit width (mm)
Light bandwidth in nm
Effect of Focal Length, F
= slit width (mm)
Light bandwidth in nm
Effect of Focal Length, F
= slit width (mm)
Light bandwidth in nm
