Leica DM5000B Manuel D’Utilisation
45
7. Startup
Fig. 45
Reflector cube for lamp adjustment
• Insert the centering key through the corre-
sponding openings (44b.1) on both sides of the
condenser.
condenser.
• Turn the centering key until the dark ring
(phase ring in the objective) is congruent with
the slightly narrower bright ring (light ring in
condenser) (44a.c).
the slightly narrower bright ring (light ring in
condenser) (44a.c).
Note:
When changing the objective, the centering key
must no longer be in the corresponding open-
ings.
must no longer be in the corresponding open-
ings.
• Repeat the process for all other phase con-
trast objectives.
• Always remove the centering keys after the
centering procedure.
Fig. 44b Light ring centering
1
1
Centering key in the phase contrast centering hole
2
Polarization contrast centering hole
1
2
7.7 Setting the motorized polarizers
(DM4500 P/DM5000 B)
• Select the POL method (one of the variable
function keys on the stand or on the Leica-
Screen).
Screen).
• Insert the centering key into the correspond-
ing openings (44b.2) on the condenser.
• Set the optimum extinction (max. darkness).
7.8 Adjusting the light sources
Transmitted-light axis (TL) with lamp housing
107/2
107/2
The lamp housing 107/2 with a 12 V 100 W halo-
gen lamp is fixed. Centering the lamp is not re-
quired.
gen lamp is fixed. Centering the lamp is not re-
quired.