54
9. Contrast Methods
For polarizer ICT/P*:
Turn the polarizer on the underside of the con-
denser in the light path. Make sure that the
red index point on the front of the polarizer is
aligned with 0.
• Insert the objective prism slide (fig. 64) into
the tube slit. The code letter, e.g. D, must coin-
cide with the code letter in the objective en-
graving. The number after the code letter only
specifies one variant, e.g. D1 = also applies
for pupil position D.
• Select the condenser side prism that corre-
sponds to the magnification of the objective
used, e.g. pos. 20/40 for 20x and 40x objec-
tives.
• For fine adjustment use the knurled wheel
(64.1) at the objective prism slide.
• The contrast can be optimized further with the
aperture diaphragm or a λ/4 compensator.
Fig. 64 Objective prism slide
1 Fine adjustment
1
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