Adjustment Of Diopter - Nikon ECLIPSE Ei Instructions Manual

3.4

Adjustment of Diopter

This procedure is to adjust the diopter ring on the eyepieces according to the difference between your right
and left eyesight.
Effect of diopter correction
This adjustment enables the user to take full advantage of high performance of objectives, and reduce focus
deviation due to switching of the magnification.
(1) Turn the diopter ring on the right and left eyepieces to
align its bottom edge with the engraved base line.
This is the standard position for the diopter
adjustment.
(2) Swing the 40x objective in the optical path. Rotate
the coarse and then fine focus knobs to bring the
specimen in focus. See the description in
"■ Focusing by switching the objective from 40x to
10x" in Section 3.3, "Focusing".
(3) Swing the 10x (or 4x) objective into the optical path.
(4) While looking into the right eyepiece with your right
eye, focus on the specimen by rotating the right
diopter ring without using the focus knob.
(5) While looking into the left eyepiece with your left eye,
focus on the specimen by rotating the left diopter ring
without using the focus knob.
(6) Repeat steps (2) to (5) to check the specimen is in
focus.
Chapter 3 Detailed Explanation
55
10x
10x
Engraved
base line
40x