OPTO-EDU A15.1018, Инструкция по эксплуатации

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11
Fig.13
Fig.15
Fig.14
4. Polarized Light Observation
4-1 Adjustments before observation
4-1-1 Focus
Use the 10×objective to focus. To avoid the
objective touch with the specimen, you should
raise the mechanical stage and let the specimen
close to the objective, then slowly separating
them to focus. The operator can converse turn
the coarse focus knob to get the specimen
down ,and search images in the 10×ocular
simultaneously, then use the fine knob to focus.
At this moment, you can replace other
magnification objectives safely, and focus
without the risk of destroying the specimen.
The tension of the coarse focusing knob has been
adjusted before leaving factory. If it is too loose,
for example, the stage decline slightly due to
self-weight, the tension adjustment collar can be
adjusted.
4-1-2 A
djusting the optical axis (Fig.13)
The revolving nosepiece is centerable. Before
leaving the factory, the optical axis of the
objective and the center of stage has been
adjusted coaxial, please do not adjust them
unless necessary.
★ Make sure the 10X objective is inserted into the
primary hole on the centerable revolving
nosepiece.
Perform the following adjustments if the optical
axial and the center of stage is not coaxial.
1. Focus on the specimen by 10x objective and look
for an easily recognizable detail
①
in the field.
Move this detail in the center of the eyepiece cross
lines.
2. When the stage is rotated, the detail moves in circle
② . Manipulate the two stage centering knobs ③ to
coincide the imaginary center of the circle
circumscribed by the detail with the intersection
of the eyepiece cross lines.
②
①
③
④