63
4.13 Examinations in transmitted light
Adjusting the height of the condensers:
There are markings (S70, S23 and S1, 48.3) on the
transmitted light illumination column for correct
setting of the condenser height.
After slackening the screw with the supplied
hexagonal screwdriver, move the condenser or
condenser holder you are using until its upper
edge is flush with the relevant marking on the illu-
mination column.
Screw down the condenser and condenser hol-
der again (82.4 + 5).
Brightfield illumination with condenser 0.30 S70
(83)
Brightfield illumination is possible with objective
magnifications from 2.5 x to 40 x.
Turn a 10 x objective into the light path and focus
with the coarse and fine drive.
Close the aperture diaphragm until you achieve
the desired image contrast.
Brightfield illumination with condensers 0.53
S23 and 0.90 S1 (84, 85)
Brightfield observation is possible with conden-
ser S 0.53 S23 with objective magnifications from
5 x to 100 x.
Condenser 0.90 S1 is designed for objective
magnifications from 10 x–100 x.
Fig. 82
Condenser holder
1
Condenser slide changer,
2
Condenser centring screws,
3
Condenser height adjustment,
4
Condenser clamp screw,
5
Condenser holder clamp screw
Fig. 83
Condenser 0.30 S70
1
Condenser top 0.30 S70 (not for use with condenser base (8.1)),
2
Condenser disc,
3
Aperture diaphragm,
4
Filter holder,
5
Condenser clamp screw
4
3
5
1
2
1
2
4
3
5
