Nikon L-ke Talimatlar Kılavuzu - Sayfa 9

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Manipulate two centering screws until the image of the illumination
field diaphragm comes to the center.
You need not mind about a slight deviation from this centering caused
by switching over to other objectives because this will not produce
any objectionable result.
6.
Observation
For usual case of observation with objectives from 4X to lOOX (oil-immer-
sion), it suffices to leave the change-over lever at the position L. When an
exact illumination or extreme brightness is required, as is the case with
photomicrography, it is necessary to make adjustment for each magnifi-
cation by switching over the lever.
7.
Photomicrography
Make exact adjustment, depending upon the magnification of the objec-
tive being used, by switching the change-over lever as below:
Objective magnification
4X
1 0 - 2 0 X
4 0 - l O O X
Position of the change-over lever
L
M
i
H
i
When using an objective 3X or lower, set the change-over
lever to H
and replace the condenser with the one specifically designed for lower
magnification.
The illumination for the Model L-Ke will not change its color temper-
ature by the change-over above mentioned.
8.
Other Light Sources
When using any other
light source outside of
the microscope, replace
the illumination field
lens with the accessory
reflecting
mirror,
as
shown in Fig. 12.
9.
Filter Case
A filter of the diameter 45mm can be mounted on the illumination field
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lens.
A filter of the diameter 33mm can be placed in the condenser or
in the filter case of the microscope.
This filter case to be attached onto
the microscope base is available on order.
FOCUSING
1.
Focusing Adjustment
The
microscope model L-Ke
is provided with coaxial, coarse and fine
focusing knobs, both of which are located near the microscope base (Fig.
13). Forward rotation of either of the focusing knobs by the operator raises
the microscope stage and vice versa (Fig. 13, 14).
2.
Eyepiece Adjustment
When using a binocular or trinocular eyepiece tube for observation the
adjustment of
the user's
eye-sight (diopter) discrepancy
between the
right and left eyes is necessary which is made by rotating the adjusting
ring on the lefthand eyepiece.
After focusing with your right eye by raising or lowering the microscope
stage, turn the adjusting ring left or right to obtain the sharp image with
your left eye, too.
Then, regulate the interpupillary distance of the bino-
cular or trinocular tube by sliding the eyepieces left or right by means of
the knob (Fig. 15), until the viewfields of both eyepieces merge together.
It will be advantageous
to memorize the attained diopter and inter-
pupillary distance readings for future use.
The red dot engraved on the interpupillary distance scale indicates the
position where the mechanical tube length becomes exactly 160mm. The
HK (high eyepoint type) eyepieces have an eyecup on top, the rotation of
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