48
Operation
of transmitted light interference contrast
Condenser for interference contrast
n.b.:
Only use the condenser tops 0.90 S1 or P
0.90S1 and P 1.40 OIL. The condenser top with
long working distance 0.50 S15 (p. 14) is not
designed for ICT work,
→
optics data sheet.
Assembly
→
p. 11, 46.
Crossing the polarizers
To obtain a good quality ICT image, the analyser
must be set exactly at 0 (rotatable version, not
illustrated) and the polarizer must be exactly
crossed (extinction position)!
Push the analyser (32.6) into the microscope as
far as the second clickstop (34.1). Alternatively,
the Pol intermediate tube, (Pol module A/BL, not
illustrated) can be used. When incident light
illumination is switched on, the analyser must be
pushed into the slit on the left of the illuminator
(not illustrated).
Rotatable
analyser only: Loosen analyser clamp
(not illustrated) and set so that the two line
markings are exactly opposite each other.
Turn the disc in the UCA/P condenser (34.2) to
the brightfield position (HF or BF), the condenser
prisms are then disengaged. Switch off the
incident light reflector* (39.2).
Pull the objective prism slide (32.8) fully or partly
out of the tube slit (34.6).
Fig. 34
Transmitted light interference contrast ICT and
transmitted light polarization
1
Analyser
→
(32.6),
2
Condenser disc*, with ICT condenser
prisms,
3
Aperture diaphragm,
4
Slit for compensators
λ
and
λ
/4 with Ø 32 mm,
→
(32.4),
5
Polarizer fixing screw,
→
Fig. 5
and 6, p. 11,
6
Tube slit for IC prisms or 6 x 20 mm
compensator,
→
(32.7 and 32.8),
7
Clamp screw for stage
rotation,
8
Clamp screw for polarizer rotation, 9 Polarizer,
rotatable
↔
1
2
3
4
5
6
8
9
7
Содержание DM L
Страница 1: ...Leica DM L Instructions...
