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