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e
b
4
c
d
Using the field diaphragm for transmitted light
3
illumination
This function is available only with the transmitted light illumination unit
( MX-TILLB).
Adjusting the field diaphragm appropriately offers the
TIP
observed images with better contrast and few flare. This
function is available with objectives between 5X and 150X.
Set the observation light path selection knob a to the DF position.
1
a
2
Rotate the revolving nosepiece to engage the 5X or 10X objective in
the light path and bring the sample into focus.
Look into eyepieces and pull out the field diaphragm lever b to
3
narrow down the field diaphragm to a certain degree.
Rotate the condenser height adjustment ring c (clockwise to move
4
the condenser up and counterclockwise to down) to bring the field
diaphragm image into focus.
If it is difficult to rotate the condenser height adjustment ring
TIP
c , insert the the Allen screwdriver d into the groove of the
condenser height adjustment ring c and move like a lever.
5
If the center of the field diaphragm is deviated from the center of the
field of view, adjust the centering by inserting the Allen screwdriver into
the field diaphragm centering screws e and rotating them alternately.
6
After the centering is adjusted, open the field diaphragm until the
field diaphragm image becomes slightly larger than the field of view.
This operation is required per each objective. However, as the field
diaphragm image is not visible when using the 40X or higher objective,
the field diaphragm should be minimized.
Field of view
Field diaphragm image
MX63/MX63L
47
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