Optika B-1000 MET, Инструкция по эксплуатации

Страница: 12 / 95

Page 12
Diopter adjustment
Adjust the fine focusing knob
to get the image sharp and
clear while observing with
your right eye, then turn the
left diopter ring to a sharp
and clear image also with the
other eye. The highpoint eye -
pieces allow the user to wear
glasses. (Fig.24)
NOTE
:For the optimal para -
focality of the image, it’s sug -
gested to wear your glasses
during the normal use of the
microscope.
Fig.24
Centering the
condenser
Insert the swing-out lens of
the condenser
①
and fully clo -
se the field diaphragm
②
. Ro -
tate the condenser adjustment
knob
③
until you see a sharp
image of the closed field
diaphragm (a bright spot of
light). Act on the condenser
centering screws
④
until you
move the bright spot in the
center of the image field. Then
re-open the field diaphragm
②
. (Fig.25)
Adjust the aperture of the iris
diaphragm under the conden-
ser to set the numerical aper -
ture of the illuminator, thus
controlling image contrast and
resolution. It is suggested to
set the aperture diaphragm
between 70% and 80% of
objective’s N.A. (Fig.26)
①
③
④
②
Fig.25
APERTURE IRIS
DIAPHRAGM IMAGE
CENTERING THE CONDENSER
OBJECTIVE PUPIL
30-20%
70-80%
F ig.26