Coarse/Fine Focusing; Observation Tube - Olympus BXFM Instructions Manual

5-2 Coarse/fine focusing

Phenomena
a) The tension of the coarse
focusing knob is too tight.
b) The stage descends on its own
weight.
Or the sample is defocused due
to the slip of the coarse focusing
knob.
c) The sample is defocused.
(The BXFM frame does not
descend.)

5-3 Observation tube

Phenomena
a) The fields of view of two eyes do
not coincide.
Repair request
If you cannot improve the phenomena after taking the above remedies, please contact Olympus for assistance.
At that time, please tell them the following information as well.
· Product name and abbreviation (Example: stage with coaxial knobs on the bottom right U-SVRM)
· Product number
· Phenomena
54
Cause
The tension adjustment ring of the
coarse focusing knob is tightened
too firmly.
The tension adjustment ring of the
coarse focusing knob is loosened
too much.
The mounting position of the BXFM
frame is too high.
Cause
The interpupillary distance is not
adjusted correctly.
The diopter of two eyes is not
compensated.
The different eyepiece is used for
right and left eyes.
The user is not used to the parallel
optical axis.
Remedy
Loosen the tension adjustment
ring so that the tension of the
coarse focusing knob becomes the
appropriate tightness.
Tighten the tension adjustment
ring so that the tension of the
coarse focusing knob becomes the
appropriate tightness.
Lower the mounting position of the
BXFM frame.
Remedy
Adjust the interpupillary distance
correctly.
Compensate the diopter correctly.
Use the same eyepiece for right and
left eyes.
The following measures may help
this problem: Do not look at the
image immediately after looking into
the eyepiece, but look at the whole
field of view or release your eyes from
eyepieces and look afar once, and
then look into the eyepieces.
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