Zeiss KF 2 ICS, Руководство по эксплуатации, Страница: 25 / 40

KF 2
ICS
Carl Zeiss
B 40-028 e 10/97 3-7
Look through the fixed eyepiece of the
binocular tube first and focus on the object via
the focusing drive (3-3/
2 ). Then set the focus
for the other eye by turning the eyelens of the
focusing eyepiece (3-3/
1 ). Set the distance of
the tubes in such a way that you can see a
sharply limited field of view with both eyes.
Control the image contrast and the resolving
power via the condenser (aperture) stop using
the lever (3-2/
2 ). Remove an eyepiece from the
tube for checking. Look through the empty
tube. Approx. 2/3 of the diameter of the visible
objective aperture should be illuminated
through the condenser stop. When changing
the objective, be sure to match the aperture
diaphragm to the objective opening.
Adjust image brightness using control (3-3/ 3 ) or
filters on the mount (3-3/ 4 ).
When using objectives with a low magnification (< 10 ), swing the additional lens in the light path
using the lever (3-2/ 2 ) and open the condenser stop until it disappears behind the edge of the field of
view.
When using immersion objectives, e.g. CP Achromat 100 /1.25 oil, always apply a drop of immersion
oil between the objective front lens and the specimen. For this, special immersion oil, which
guarantees the full performance of the objective, is supplied in an oiler. Make sure that there are no
bubbles between the specimen and the objective front lens, since this would reduce the image
quality.
Do not immerse the condenser front lens.
The objective mount of the immersion objectives can be locked by lifting and slightly turning it so that
the immersion objective can be swung in and out without touching an immersed cover slip. This
prevents the front lenses of dry objectives from dirt.
Fig. 3-3 Setting the microscope in bright-
field