Agilent Technologies 1260 Infinity User Manual page 15

Lamp
The light source for the UV wavelength range is a deuterium lamp. As a result
of plasma discharge in a low pressure deuterium gas, the lamp emits light over
the 190 to 600 nm wavelength range.
Source Lens Assembly
The source lens receives the light from the deuterium lamp and focuses it onto
the entrance slit.
Entrance Slit Assembly
The entrance slit assembly has an exchangeable slit. The standard one has a
1-mm slit. For replacement and calibration purposes to optimize the
alignment, a slit with a hole is needed.
Filter Assembly
The filter assembly is electromechanically actuated. During wavelength
calibrations it moves into the light path.
The filter assembly has two filters installed and is processor-controlled.
OPEN
CUTOFF
HOLMIUM holmium oxide filter for wavelength check.
A photo sensor determines the correct position.
Cutoff filter
Figure 3
Agilent 1260 Infinity Variable Wavelength Detector User Manual
Introduction to the Variable Wavelength Detector
nothing in light path
cut off filter in light path at
Filter Assembly
λ
> 370 nm
Holmium oxide filter
with cutoff filter
1
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