Nikon ECLIPSE E400 POL Instructions Manual page 25

3. Operation of Each Part.
The analyzer can be rotated by first loosening the
analyzer clamp screw [T] and then turning the rotation
dial [2]. The angle of rotation can be read to 0.1
degrees over a range of 0-360 degrees with the
vernier.
The analyzer can be moved out of the optical path by
pushing in the analyzer slider [3]. Although the
analyzer is designed, as a standard, to be inserted
from the right relative to the intermediate tube, it can
also be inserted from the left. In this case, it may be
somewhat difficult to read the angle of rotation since
the readings on the scale, etc. are backward.
Since the intermediate tube contains a built-in depolarizer, it is not necessary to be
concerned about the relationship between the orientation of the polarizing plate and
photomicrographic devices.
When changing the objectives, turn the Bertrand lens Bertrand lens
focus ring under the Bertrand lens turret of the centering Screws
intermediate tube and focus the Bertrand lens.
Centering the Bertrand lens is performed with two
centering screws. The centering procedure is the same
as that for the condenser except that the condenser
aperture diaphragm image is used instead of the field
diaphragm image.
P-CL 1/4). & tint plate
The P-CL 1/42. & tint plate has a hole in the center. By pushing it into the slot, the sensitive tint
plate (530 nm) is brought into the optical path. Pulling it out brings the 1/47. plate into the optical
path. This plate is used for recognition of very weak birefringence and the determination of X°
and Y" of the specimen.
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