Polarization (Tl) - Leica DMI Series Instructions Manual

8. Operation

8.2.4 Polarization (TL)

Leica DMI3000 B:
• If necessary, adjust the TL bright fi eld position
at the fi lter slider.
• Select an objective.
• Set the condenser to the bright fi eld position.
Remove all IC prisms from the light path.
• Move the polarizer on the condenser into the
beam path.
• Insert the analyzer into the right side of the
stand until it clicks into position.
• Bring the polarizer and analyzer into cross po-
sition until they reach maximum darkness.
• Insert a specimen.
• Set the brightness at the light potentiometer
• Focus the image with the focus wheels.
Leica DMI4000 B and Leica DMI6000 B:
• Use the TL/IL function button to switch to
transmitted light (TL).
• Select the POL (polarization) contrast method
by pressing the variable button POL.
Alternatively: press the variable button
CHANGE TL .
(For details on button assignments, please see
the identifi cation sheet.)
POL will appear on the LeicaScreen.
88
Manual method:
• Move the polarizer on the condenser into the
beam path.
• Insert the analyzer into the right side of the
stand until it clicks into position (Fig. 110).
• Bring the polarizer and analyzer into cross po-
sition until they reach maximum darkness.
• Place a specimen on the stage and select a
suitable objective.
Motorized method:
• If the microscope is equipped with the relevant
components, the polarizer will be activated
automatically in the condenser when the POL
contrast method is selected. The analyzer
cube is also automatically positioned in the
beam path.
Combined methods:
• The Leica DMI4000 B and Leica DMI6000 B mi-
croscope permit purely mechanical and motor-
ized components – such as a mechanical ana-
lyzer and motorized polarizer – to be combined.
Fig. 110 Inserting the analyzer