Leica DM R Serie Mode D'emploi page 34

POL filter system
Reflector ICR
The polarizer and analyser are in a fixed crossed
position and combined with a 45° reflector.
Inserted like filter systems and reflectors (see
p. 26). The ICR reflector has a built-in MgF
as well: better homogeneity (fov 25) but not for
colour contrast. Polarizer and analyser are not
required in this case.
Protective filter
!
Attention:
When using Hg and Xe lamps, the polarizers
must be protected by a special protective filter!
Fig. 30 Analysers
1 Analyser 360, 2 Precision scale with 0.1° vernier (clamp
screw on the back), 3 Orientation scale (90° intervals), 4 Neu-
tral density filter switch, 5 Analyser IC/P, with whole-wave
compensator inactive, 6 Clamp screw and index, 7 Analyser
IC/P turned the other way round for use of whole-wave
compensator
1
3 4
2
34
5 6 6 7
Analysers*
There are two different types of analyser for
reflected and transmitted light polarization and
interference contrast techniques:
Assembly: remove cap and insert analyser from
plate
the left (48.2 or 54.3) as far as possible.
2
Analyser IC/P
Polarization direction E – W, rotatable through
approx. ± 7° (30.5). Combined with a whole-wave
compensator (λ) on its upper surface, so when
the analyser is inserted the other way up, red I
becomes active (30.7), see also colour chart on
p. 80.
Analyser 360
Rotatable through 360° and reading to 0.1° (30.2),
vibration direction in 90° setting according to
DIN: N – S. Engageable (30.4) neutral density
filter in empty slot to prevent glare when the
analyser is switched off. A whole-wave
compensator is not integrated, so colour
contrasting is only possible for ICR reflected
light interference contrast with a polarizer ICR
from the "DM L" range.