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Leica M-series User Manual 119
Simple filter holders
Simple filter holders
Three simple filter holders are included with
the Leica M165 FC and the Leica M205FA. These
filter holders have two empty openings for the
observation beam paths. The third opening, to
the illumination beam path, is closed.
Use this filter holder if you want to work
ρ
briefly (no more than 15 seconds) without
fluorescence illumination.
So that the filter holder is not heated,
it must not block the mercury light for
longer than 15 seconds.
Safety Notes
If you want to block the mercury light for
ρ
longer than that, activate the UV shutter.
Use the filter if you want to change to trans-
ρ
mitted light or incident light observation
without fluorescence.
Always place a simple filter holder into the
ρ
empty filter changer positions in order to
protect yourself from UV radiation and
protect the system from dust.
•
If you are using fewer than four filter
holders with fluorescence filters, always
insert the included simple filter holders with
closed illumination beam path into the avail-
able positions. Otherwise, there is a risk of
danger to the eyes from direct UV radiation
from the third beam path.