Download INSTRUCTION MANUAL System User`s Guide UV

6.4
6.4
Measurement System
6.4.1 Optical System
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A schematic of the optical system for the UV-1800 is shown in Fig. 6.16.
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D2:
WI:
F:
GR:
S1:
S2:
W:
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Deuterium lamp
Halogen lamp
Filter
Grating
Entrance slit
Exit slit
Window Plate
L.M.:
M1~M5:
B.S.:
L:
Sam:
Ref:
P.D.:
Light-source switching mirror
Mirrors
Beam splitter
Lens
Sample cell
Reference cell
Photodiodes
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Fig. 6.16 Schematic of optical system
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The light coming from the light source (deuterium lamp D2 or halogen lamp WI) is reflected by mirror
L.M. and then enters the monochromator. Light source switching is entirely automatic, with the
instrument selecting the next light source by rotating the mirror L.M. according to the wavelength.
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Deuterium lamp: 190 nm to light source switch wavelength
Halogen lamp: Light source switch wavelength to 1100 nm
The light source switch wavelength can be set anywhere in the range from 295.0 to 364.0 nm
(default setting: 340.8 nm).
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UV-1800 SERIES