Adjust Interpupillary Distance; Mounting The Jewellery Clip; Focus And Regulation Of The Focusing Tension; Dioptric Compensation - OPTIKA MICROSCOPES OPTIGEM Manual De Instrucciones

4.0 UsIng the mIcroscope
4.2

adjust interpupillary distance

Hold the right and left parts of the observation head by both hands and adjust the interpu-
pillary 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 inter-
pupillary distance is too small.
4.3

mounting the jewellery clip

The jewellery clip can be mounted in one of three different holes on the stage plate: one
in the front and one on each side. Once attached, the object to examine can be placed in
the jewellery clip.
4.4 Focus and regulation of the
focusing tension
Turn the zoom to the highest magnification
using the bilateral zoom knob. Try to focus the
sample using the focusing knobs.
The tension of the focusing knob can be adju-
sted by rotating the right focusing knob kee-
ping still the left focusing knob.
4.5

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 dioptre 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).
4.6

magnification and working distance

The jewellery clip can be mounted in one of three different holes on the stage plate: one
in the front and one on each side. Once attached, the object to examine can be placed in
the jewellery clip.
Select the desired magnification by adjusting the bilateral zoom knob. Change the eyepie-
ces and/or add an appropriate magnifying objective lens if necessary. The total magnifica-
tion used can be calculated by the following equation:
Total magnification = Eyepiece magnification x Zoom magnification x Objective lens magni-
fication
Normal working distance for the standard configuration (1x objective lens) is 95 mm.
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