Olympus BHS-653P Інструкція з експлуатації - Сторінка 14
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D.
Centering the Condenser
1) Bring the objective 10X into the light path.
*
If a specimen is placed on the circular rotat-
able stage without a mechanical stage it is
recommended t o hold the peripheries of the
specimen with the stage clips provided.
2) Swing in the condenser top lens, and bring
the specimen into focus.
3 ) Stop down the field iris diaphragm
O .
A
slightly blurred image of the field diaphragm
can now be seen in the eyepiece. (Fig. 1 1 )
Fig. 11
4) Adjusting the condenser height, focus on the
image o f the field diaphragm.
*
If the specimen slide is too thick, i t is sometimes impossible to obtain a sharply-focused
Image.
5) While widening the diameter of the field progressively, use the condenser centering screws
@
t o bring the diaphragm image into the center of view. (Fig. 11)
6) Push analyzer
a
into the light path, and
5
..
--.
7 7 7 3 ? w - , *
make sure that both polarizer and analyzer
are set at position "0" t o attain the "crossed
filter" position. Then loosen the clamping
screw
@
of the polarizer. (Fig. 12)
7)
Remove the specimen out of the light path
SO
that a transparent area comes into the
light path. Keeping the polarizer at the
"0"
position, rotate the polarizer rotation ring
@
until the optimum extinction is obtained,
then clamp the ring. (Fig. 12)
*
Make sure that no test plate i s engaged.
Fig.
12