Leica DM5000B Manuel D’Utilisation

9. Contrast methods for Leica DM4000 B/DM4500 P/DM5000 B

9.1.4.3 Motorized method

• After the POL contrast method has been se-

lected, the position of the polarizer is
switched inside the condenser (if the micro-
scope is equipped with these components).
The analyzer cube is also automatically
brought into the beam path.

9.1.4.4 Combined methods

• For the Leica DM4000 B, DM4500 P and Leica

DM5000 B microscopes, it is possible to com-
bine purely mechanical and motorized compo-
nents.

For DM4500 P only:

After the Bertrand lens (links) is turned inwards,
CONOS appears on the display. The light intensi-
ty and aperture and field diaphragms are as-
signed to the objective currently in use (objec-
tive magnification for conoscopy is 40x, 63x or
100x).

9.1.5 Differential interference contrast (TL)

9.1.5.1 DM4500 P

• Switch to the transmitted light axis (TL) by

pushing the TL/IL function key.

• Insert a specimen and rotate a suitable objec-

tive into place.

• Select the DIC contrast method.

Do so by pressing the DIC variable key.
Or by pressing the variable button.
CHANGE TL .
(For details on key assignments, please see
the identification sheet.)
ICT appears on the display.

• Turn the polarizer on the underside of the con-

denser into the light path. Make sure that the
red index point on the front of the polarizer is
at 0 (Fig. 72).

Fig. 72

Turn the polarizer inward

Polarizer

Fig. 73

Inserting the analyzer

Analyzer