Leica DM LSP Bedienungsanleitung Seite 6

Quartz plate. This has a depolarizing effect.
If the tube is mounted directly to the micro-
scope, i. e. without the Pol module and there-
fore without the quartz plate, anomalous inter-
ference colours (pseudodichroism) may occur
when the analyser is disengaged.
Centering nosepiece
All objectives of the quadruple centering nose-
piece are centrable to the axis of rotation of the
stage with the two centering keys (1.3; 43.15),
p. 5.
Pol objectives
Objectives with the additional engraving P or
POL are manufactured to be particularly low in
strain. However, they may show considerable
signs of strain if subjected to rapid changes in
temperature or mechanical damage.
Pol rotary stage
Together with the centered objectives, the ball-
bearing precision stage enables exact angle
measurements.
Pol condensers
The condensers (43.8) also have to be strain-free
for all examinations in polarized light. Therefore,
only the special Pol condensers CLP/PH or UCLP
0.85 (identified by the code letter P and the aper-
ture value 0.85) can be used.
Polarizer
First the switchable polarizer (43.10), rotatable
through 360° and with slot for λ or λ/4 compen-
sator above (8.2) or, as a simple solution, the fil-
ter holder (28.4) with slot-in polarizer can be
used.
6
Analyser mount TL L 1/25 (option)
(not illustrated)
In case of alternative outfits without Pol module,
the modular analyser mount TL L 1/25 (11 505 121)
can be directly interposed between stand and
tube. This allows the use of fixed and rotatable
analysers (180°) in slider.
Assembly
First read the general assembly instructions on
page 5 – 21. The polarizer (43.10) is screwed onto
the underside of the condenser holder at the left.
Caution!
When assembling the intermediate tube (Pol
module, tubes) and the (right-hand) Pol eye-
piece, remember to watch out for the orientation
aids (pin and groove) at the joints.
Operation of transmitted light pol
Basically all information on pages 21 – 52 is valid.
In addition, please observe the following specific
measures for polarization.