KERN OBN 141, Инструкция пользователя

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OBN-14-BA-e-1510 12
4.1 Microscope head
First you must loosen the fixing screw on the tube connection point and remove the
black protective cover.
You can then insert the round dovetail bracket on the head into the round dovetail
bracket on the housing and fix it with the fixing screw. When doing this, you should
always make sure that you do not touch the lenses with your bare fingers and that no
dust enters the apertures.
4.2 Objectives
The specimen stage must be in its lowest position so that the objectives can be
screwed into the nosepiece. You can then screw the objectives into the nosepiece so
that when you turn the nosepiece in a clockwise direction, the objective with the next
strongest magnification appears. You must make sure that you do not touch the
lenses with your bare fingers and that no dust enters the apertures. For objectives
which ar
e marked “OIL”, you must use
an immersion oil with the lowest level of
inherent fluorescence.
4.3 Eyepieces
You must always use eyepieces with the same magnification for both eyes. These
are simply placed onto the tube connectors, once you have first removed the plastic
protective caps. There is no way of fixing them. You should always make sure that
you do not touch the lenses with your bare fingers and that no dust enters the
apertures.
4.4 Colour filter
A blue colour filter is already an integral part of the condenser. It is screwed onto the
underside using a ring bracket. It can be removed at any time. In order to use
suitable filters without this holder ring, these can simply be placed in the ring bracket
of the field lens.