Perkin-Elmer Lambda 20 User Manual

System Description
77
Figure 17 Optical Path for Lambda 20
The exit slit restricts the spectrum segment to a near-monochromatic radiation beam.
The slits provide a spectral bandpass of 1 nm, or 2 nm.
From mirror M3 the radiation is reflected onto a beam splitter which allows 50% of
the radiation to pass onto plane mirror M4, and reflects 50% of the radiation onto
plane mirror M5.
Mirror M4 focuses the radiation beam in the sample cell.
Halogen
lamp
Deuterium
lamp
Filter wheel
M2
M1
Slit 1
Slit 2
M5
Reference
Sample
M3
Detector
Lens
Lens
Detector
M4
Grating
(Monochromator)
Beam Splitter
M = Mirror
M1, M4, and M5 = Plane Mirror
M2 = Toroidal Mirror
M3 = Spherical Mirror
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Perkin-Elmer Lambda 20 Specifications

General

Brand	Perkin-Elmer
Model	Lambda 20
Category	Measuring Instruments
Language	English