Operation
Axiostar
plus
Transmitted light brightfield
Carl Zeiss
B 40-815 e 12/01
3-5
•
Swivel 10x objective into beam path via
knurled ring (3-4/
5
) of the nosepiece.
•
Look through the fixed eyepiece of the
binocular tube (3-4/
6
) first and focus on the
object via the focusing drive (3-4/
1
).
•
Then set the focus for the other eye by
turning the eyelens of the focusing eyepiece
if necessary.
•
Close luminous-field diaphragm (3-4/
2
) until
it is visible in the field of view, even if not in
focus (3-4/
A
).
•
Use the condenser (3-3/
3
) to adjust the
condenser until the luminous-field
diaphragm is sufficiently in focus (3-4/
B
)
•
Center luminous-field diaphragm (3-4/
C
)
using both centering screws (3-4/
4
) and
then open it until the edge of the
diaphragm just disappears from the field of
(3-4/
D
).
•
For aperture diaphragm setting (contrast),
remove one eyepiece from the tube and
look into the tube with your naked eye. Use
lever (3-4/
3
) to set the aperture diaphragm
to approx. 2/3 ... 4/5 of the diameter of the
objective exit pupil (3-4/
E
). In most
applications, this setting of the aperture
diaphragm provides optimum contrast at
almost full resolution and therefore the best
compromise for the human eye.
•
Replace eyepiece into the tube.
1
Focusing drive
2
Luminous field diaphragm
3
Lever for aperture diaphragm setting
4
Centering screws for condenser
5
Knurled ring - nosepiece
6
Binocular tube
Fig. 3-4
Setting transmitted-light brighfield for
KÖHLER illumination
☞
The size of the field of view and objective
aperture changes every time an objective is
switched; therefore, you must reset field of
view and aperture settings for optimal results.
For objectives < 4x, the swivel wide-angle unit
must be moved into the light path (see
section 2.9).
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