Leica Microsystems DMI3000 B Mode D'emploi page 75

• If the light ring and the phase ring are not
shown as arranged in Fig. 95c, the light ring
must be centered.
• Insert the centering keys into the openings
provided on both sides of the condenser (90.3).
• Turn the centering keys until the dark ring
(phase ring in the objective) is congruent with
the slightly narrower bright ring (light ring in
condenser) (95 c).
Caution!
The centering keys must be removed from
the centering openings before changing ob-
jectives. They may block the condenser.
• Repeat the process for all additional phase
contrast objectives.
• Remove the centering keys after centering.
Integrated phase contrast with bright fi eld
objectives via front slider
When choosing an objective suitable for phase
contrast, the appropriate light ring is selected
automatically when using a motorized condens-
er. Otherwise, select the light ring manually.
Centering the phase rings is not required for ob-
jectives with eyepoint A. Checking the position
of the phase rings is essential only when using
objectives with eyepoint C.
(For the eyepoint of your objective, please refer
to the included objective list or the engraving on
the objective itself.)
• Move the front slider with the phase rings into
the beam path.
Leica DMI3000 B:
• If necessary, adjust the TL bright fi eld position
at the fi lter slider.
• Set the condenser to the bright fi eld position.
Fig. 96 Condenser with motorized polarizer
1 Centering key for polarizer
1
Fig. 97 Condenser centering
1 Centering openings
2 Height adjuster
3 Prism and phase ring centering
2 1
7. Start-up
2 1
3 3
75