3
Operation of Each Part
16
IC Inspection Microscope ECLIPSE L200ND / L200N Instructions
3.4
Diopter adjustment
The diopter adjustment compensates for differences in eyesight between your left and right
eyes. After the correct adjustment, you will find the observation with both eyes easier and
the focus shift is reduced when switched to the different objectives. Be sure to adjust the
diopter adjustment rings on both eyepieces.
Figure-17 Diopter
adjustment
1.
Turn the diopter adjustment rings on both eyepieces to align their engraved lines with
the edge of the outer tube of the eyepiece. (This is the standard position for the diopter
adjustment.)
2.
Focus on the sample with the 10
×
objective following the steps described in “2.1
Episcopic bright-field microscopy” or “2.6 Diascopic bright-field microscopy (for L200ND
only).”
3.
Bring the 50
×
objective in the optical path and focus on the sample using the focus
knobs. (Using the focusing target makes the focusing easier on episcopic illumination.
See “3.9 Focusing target”.)
4.
Bring the 5
×
or 10
×
objective in the optical path.
5.
Looking through the right eyepiece with your right eye, focus on the sample by turning
the diopter adjustment ring on the right eyepiece (not the coarse and fine focus knobs).
Look through the left eyepiece with your left eye and focus on the sample with the
diopter adjustment ring on the left eyepiece.
6.
Repeat steps 3 to 5 until the image keeps its focus even though the objective
magnification is changed.
Outer tube edge
Engraved line
Diopter adjustment ring
