Bestscope International Limited
5
．
Phase contrast viewing BS-2090
5-1 The name of the components
5-1-1
Phase contrast objective
（
fig.26
）
◎
the optional magnification of the phase
contrast is :10X
、
20X
。
◎
If you want to know how to mount the phase
contrast objective, please see
2-2-4
. You ought
to mount it on the turret.
5-1-2 Phase contrast slider
（
fig.27
）
◎
phase centering adjustable slider
◎
The light ring was centered beforehand, so it
needn’t to adjust in the use process. If the ring
is not in the center, you could adjust by the
centering bolt.
◎
The 10X/20X light ring
①
is worked with the
10X,20X phase contrast objective, while the
opening
②
is used for bright field .
Figure 27
Figure 26
2
1
