1-2 2998 PDA Detector Optics Principles
Detector optics
The detector is an ultraviolet/visible light (UV/Vis) spectrophotometer. With a
photodiode array of 512 photodiodes and an optical resolution of 1.2 nm, the
detector operates within a range of 190 to 800 nm.
The figure below illustrates the light path through the optics assembly of the
detector.
Optics assembly light path
The following table describes the optics assembly components.
Optics assembly components
Component Function
Lamp Deuterium source lamp.
M1 mirror Focuses light from the deuterium source lamp.
TP02819
Grating
Photodiode
array
Spectrograph
mirror and
mask
Flow cell
Window
Filter
flag/shutter
Lamp
Order filter
M1 mirror
Slit