14
Fig. 25
3
Cleaning the Dustproof Glass
(Fig. 25)
}Clean the dustproof glass @ periodically to prevent the view from deterio-
rating when the dustproof glass gets dirty.
1. To prepare for blowing dirt and dust away using an air blower, raise the
revolving nosepiece to the upper limit position.
2. Remove the stage center plate and one objective.
3. Through the stage center plate hole ², blow air toward the objective
mount screw hole ³ to blow dirt and dust away.
4. If the dustproof glass is still dirty, wipe using a cotton swab moistened
with a cleaning fluid. (To approach the dust glass, lower the revolving
nosepiece.)
@
³
²
Fig. 24
2
Using the Aperture Iris Diaphragm
(Fig. 24)
}The aperture iris diaphragm determines the numerical aperture of the
illumination system. It enables you to adjust the depth of focus, contrast
and resolution according to your requirements.
· To confirm the aperture iris diaphragm, remove the eyepiece when nec-
essary, and then look into the eyepiece sleeve; you will see the field of
view as shown in Fig. 24. Now adjust the aperture iris diaphragm lever as
required.
Aperture iris
diaphragm image
Objective pupil
70 – 80%
30 – 20%
Summary of Contents for GX41
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