9
Adjusting the focusing tension
The tension of the focusing knobs can be adjusted.
You can set it from light to heavy according your
own preference. Please note that when the
specimen leaves the focus plane after focusing or
the stage declines out of its own, then you need to
adjust the tension
To tighten the focusing knob (more heavy), rotate
the tension adjustment ring counter-clockwise; to
loosen it, please turn it in the clockwise direction
Eyepieces
Using a binocular (or trinocular) tube is less tiring
for the eyes than a monocular tube. In order to
obtain a smooth “compound” image, we
recommend you to go through the below steps
1. The interpupillary distance
The correct interpupillary distance is reached when one round image is seen in the field of view (see image
below). This distance can be set by either pulling the tubes towards each other or pulling them away from
each other. This distance is different for each observer and thus should be set individually. When more users
are working with the microscope it is recommended to remember your interpupillary distance for a quick set
up during new microscopy sessions
2. The correct eye point
The eye point is the distance from the eyepiece to the user’s pupil. To obtain the correct eye point, move the
eyes towards the eyepieces until a sharp image is reached at a full field of view
3. Adjusting the diopter
•
Set diopter adjustment ring to zero.
•
Close the left eye and focus the right tube by adjusting the coarse- and fine adjustment knobs.
•
Close the right eye and focus the left tube with the diopter adjustment ring
This procedure should be followed by each individual user. When more users are working on the same
microscope it is recommended to remember your own diopter setting for a quick set up during new
microscopy sessions
Abbe condenser
Beneath the object stage an Abbe condenser N.A. 12.5 is mounted. The condenser can be adjusted in height
by moving the rack and pinion knob beneath the mechanical stage. By adjusting the condenser you can focus
Focusing tension
Field of view before
adjustment
Field of view after
adjustment
