Diopter Adjustment; Interpupillary Distance Adjustment - Nikon Eclipse LV100DA-U Instructions Manual

10

Diopter Adjustment

Diopter adjustment compensates for the difference in visual acuity between the right and left eyes.
This adjustment improves binocular observation and minimizes focal deviation when switching
objectives. Make sure to adjust the diopter adjustment rings on both eyepieces.
1 Rotate the diopter adjustment rings of the eyepieces and align their engraved lines with the
edges of the outer tubes of the eyepieces (They are the standard positions for the diopter rings.)
2 Follow the procedure described in Pages 15 and 16 for the bright-field microscopy under the
episcopic illumination (or Pages 26 and 27 for the bright-field microscopy under the
diascopic illumination), and focus the specimen with the 10x objective.
3 Locate the 50x objective into the optical path. Rotate the coarse/fine focus knobs to focus on
the specimen.S
4 Locate the 5x or 10x objective into the optical path.
5 Focus on the specimen with the diopter adjustment rings not with the coarse/fine focus knobs.
Look through the left eyepiece with your left eye and the right eyepiece with your right eye
to focus on the specimen.
6 Repeat the steps 3 to 5 using the 50x objective and the 5x or 10x objective, until the focus
shift is eliminated even when the lens magnification is changed.
Diopter
adjustment
ring
Outer tube
edge
Positioning
grooves
Diopter adjustment standard position
11

Interpupillary Distance Adjustment

Before performing the interpupillary distance
adjustment, follow the procedure described in
Pages 15 and 16 for the bright-field microscopy
under the episcopic illumination (or Pages 26 and
27 for the bright-field microscopy under the
diascopic illumination), and focus on the specimen
with the 10x objective.
Adjust the interpupillary distance so that the
viewfields for both eyes come together.
This will facilitate the observation with both eyes.
The binocular part has a scale for interpupillary
distance. It is recommended to memorize or record
your interpupillary distance, so that the distance
between the eyepieces can be adjusted with ease
next time.
III. Operation of Each Part
Engraved
line
BF DF FL1 FL2
FL1
BF DF FL1 FL2
FL1
Converge until the right and left
view fields coincide.
F. ST O P
FL2
UEP I2A
USB
F. ST O P
FL2
UEP I2A
USB
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