Leica DMI3000B Mode D'emploi page 78

• Select the phase contrast objective with the
lowest magnification.
• Focus on the specimen.
• Focus the ring structure (95a) by loosening
the clamping ring (93.2) somewhat and
moving the eyelens (93.1), or focus the
Bertrand lens (94.2).
• Retighten the clamping ring.
Leica DMI3000 B:
• Select the light ring for the active objective on
the condenser.
Leica DMI4000 B and Leica DMI6000 B:
• Press the PH (phase contrast) button (one of
the variable function buttons behind the focus
wheels). The light ring will be selected in the
condenser.
• 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.
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
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