Leica DMi1 Instructions For Use Manual page 30

8. Operation
Adjusting the tubes and eyepieces
For microscopy work with glasses, the protec-
tion screen on the eyepieces must be removed
or inverted, but it should always be used when
observing without glasses.
• Adjust the interpupillary distance on the tube
by pulling the eyepiece tube or pushing them
together so that when viewing with both eyes,
a congruent total image is seen and not a dou-
ble image.
• Note your personal interpupillary distance.
• Close any unused tube openings, as otherwise
stray light can interfere with observation.
Only if no graticule is inserted in both eyepieces:
• Bring the specimen very much out of focus or
remove it from the beam path.
• Adjust the eyelens so that the limit of the field
of view appears sharp. When you adjust the
eyelens, a bright line is visible along the outer
perimeter of the eyepiece body. It indicates
the correct position of the eye lens for normal
eyesight and for users wearing glasses during
microscopy work with corrective glasses.
Fig. 24 Adjusting the eyepieces
30
Note:
Eyeglasses with multifocal lenses (bifocals and
smooth view glasses) must be removed while op-
erating the microscope.
• Focus on the object through the eyepieces.
Only if one eyepiece does not have an adjustable
eyelens:
• First focus the specimen through this eyepiece
exactly (close the other eye).
• Then, likewise focus the image by adjusting
the eyelens of the second eyepiece.
Correction for vision problems
• With your right eye, look through the right eye-
piece and bring the specimen into sharp focus
using the fine adjustment.
• Then, with your left eye, view the same posi-
tion of the specimen and rotate the left eye-
piece tube until this position is brought into
sharp focus. While doing so, do not use the
fine adjustment.
• If using eyepieces with adjustable eyelenses,
do not compensate for vision problems by ad-
justing an eyepiece tube, but by adjusting the
eyelens of the eyepiece.