Using The Microscope; Magnification And Working Distance - Optika SZN Série Manuel D'instructions

4.0 USInG THe MICROSCOPe

4.1 Adjust interpupillary distance
hold the right and left eyepiece tube with both hands
and adjust the interpupillary distance by moving the two
parts until one circle of light can be seen. If two circles
appear, the interpupillary distance is too big, and if two
overlapped circles appear, the interpupillary distance
is too small.
4.2 Focus
Put the sample to be observed on the plate and turn
the zoom to the highest magnification using the bilateral zoom knob. Try to focus the sample using
the focusing knobs of the stand.
If necessary adjust the height of the microscope head along the vertical stand. Remember to lock
the lock screw and support collar after aligning the height of the microscope.
4.3 dioptric compensation
This compensation makes it possible for people with glasses to adjust the microscope to their eyes
and use the microscope without glasses. Turn the zoom down to the lowest magnification. Adjust the
diopter compensation ring of the right eyepiece tube until the image of the right eyepiece is clear and
sharp. Repeat the procedure for the left eyepiece. Then, check the focus of the image for the whole
zoom range. It should now be perfectly parfocal (focus is always maintained during the change of
magnification).
4.4

Magnification and working distance

The total magnification varies depending on the eyepieces and auxiliary objectives used. with the
bilateral zoom knob, the user can change the magnification in a factor of 6.7 with perfect parfocality
and the image is always centred.
Select the desired magnification by adjusting the bilateral zoom knob. Change the eyepieces and/or
add an appropriate magnifying objective lens if necessary. The total magnification used can be cal-
culated by the following equation:
Total magnification = Eyepiece magnification x Zoom magnification x Objective lens magnification
normal working distance for the standard configuration (1x objective lens) is 100 mm.
dIOPTRIC
COMPEnSATIOn
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