Optical Lenses; Figure 10-5: Pmt Optical Filter Bandwidth; Figure 10-6: Effects Of Focusing Source Uv In Sample Chamber - Teledyne 100E Instruction Manual

Model 100E Instruction Manual

10.2.5. Optical Lenses

Two optical lenses are used to focus and optimize the path of light through the sample
chamber.
Reference
Detector
If source UV is unfocused,
Reference Detector only sees a
small portion of emitted light

Figure 10-6: Effects of Focusing Source UV in Sample Chamber

045150102 Rev XB1
5
10
4
10
3
10
2
10
1
10
1
0
100 200

Figure 10-5: PMT Optical Filter Bandwidth

If source UV is unfocused, PMT
receives fluorescence from area
outside Reference Detector's view
When source UV is focused,
Reference Detector most of
the emitted light
PMT OPTICAL FILTER
BANDWIDTH
SO * FLUORESCENT
2
SPECTRUM
300 400
WAVELENGTH (nm)
When source UV is focused, PMT
and Reference Detector view
similar volume of SO
PMT
Theory Of Operation
500
*
2
UV Source
214 nm
Lens
Filter
330 nm
Filter
PMT Lens
169