Olympus IX73 - Cross-Nicol Adjustment

41
IX73
a
when using IX3-LWUCDA
d
b
when using IX-LWPO
when using IX3-LWUCDA
c
d
e
f
Rotate the condenser’s turret for the BF (brightfield) light path (with
no optical element engaged in the light path).
When IX3-LWUCDA is used, push the button
a
of IX3-LWUCDA to
engage the polarizer in the light path.
When IX-LWPO is used, move the polarizer detaching lever
b
on
the IX-LWPO polarizer to engage the polarizer in the light path.
Engage the 10X objective in the light path, place an optimum speci-
men for brightfield observation on the stage, bring the specimen
into approximate and remove the specimen out of the light path.
Refer to page 39, engage the DIC slider and the analyzer in the light
path.
Remove the eyepieces from the observation tube, look into the
observation tube.
Move the prism movement knob
e
of the DIC slider in the clock-
wise direction around the axis until the knob is stopped. First a
black interference stripe then a rainbow-colored interference stripe
will be observed. Stop the knob at the position in which the black
interference stripe can be seen. (State of
f
)
When IX3-LWUCDA is used, loosen the polarizer rotation knob
d
by rotating the clamping knob
c
in the clockwise direction until
the knob stops.
When IX-LWPO is used, loosen the clamping of the polarizer rota-
tion/clamping knob by rotating slightly the polarizer rotation/clamp-
ing knob
d
in a counter-clockwise direction.
While looking into the observation tube, rotate the polarizer rotation/
clamping knob
d
on the polarizer unit horizontally until the black
interference stripe becomes darkest. This is the cross-nicol position.
After determining the position, clamp the polarizer.
When the IX3-LWUCDA is used, rotate the clamping knob
c
in
the counterclockwise direction around the axis until the knob is
stopped.
When the IX-LWPO is used, rotate the polarizer rotation/clamping
knob
d
in a clockwise direction until the knob stops.
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Cross-Nicol Adjustment