Nikon LABOPHOT-POL Руководство по эксплуатации - Страница 13
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plate
.
1/4A plate
Empty hole
Sensitive tint plate
Fig. 20
•
As the orientation
of
the d ia-polarizer
slightly
changes when centering the con-
denser, check the orientation
after center-
ing the condenser.
•
The analyzer rotates 1800 via the rotation
ring the left-hand side clamp being releas-
ed. The rotation
angle is readable with
accuracy of 0.10 via the vernier.
Fig. 19
•
The test plate has an empty hole at the
center. By pushing it through the slot, the
sensitive tint
plate
(530nm)
is brought
into the optical path and by pulling it out
the 1/4
A
plate is brought into the optical
path.
10) Dia-polarizer and analyzer
• When the both are set at Q reading on the
protractor
scale, position of the polariza-
tion plane coincides with the orientation
plate (X-direction for polarizer, Y -direction
for analyzer) on the microscope base.
-(Fig. 20)
[Note]
Some of the reference books or
special
works
about
polarizing
microscope
available
in
the
market explain that X-direction is
for analyzer and V-direction
for
polarizer.
Conoscopic image
of this area can be
observed
Orthoscopic viewfield
~Pin
hole eyepiece
In the above simultaneous observation of
the conoscopiC and orthoscopic
images,
the former
image may appear deviated
from
the orthoscopic
view field center,
however,
the deviated
image represents
the conoscopic
Iight flux that covers the
central part of the orthoscopic
view field
to the extent of about 1/18 .
Fig. 18
•
The conoscopic
view field is as large as
about 1/4 of the orthoscopic view field.
(Fig. 17)
Fig. 17
•
The conoscopic image may also be observ-
ed overlapping
on the orthoscopic
image
through the binocular observation, one of
the paired eyepieces being replaced with
the accessory pin hole eyepiece and with-
out the Bertrand lens in the opti"cal path.
(Fig. 18)
9) 1/4 A
&
tint plate
•
Removing the 1/4
A
plate side screw, hold
the
1/4
A
&
tint
plate,
the click-stop
groove facing the operator and insert it
forward into the compensator slot.
Then screw-i n the above screw as it was.
(Fig. 19)
13