Operating The Binoculars; Adjustment Of Diopter - Nikon ECLIPSE Si Instructions Manual

3.6

Operating the Binoculars

3.6.1

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 objective performance, and reduce loss of focus when
switching magnifications.
(1) Turn each diopter ring on the right and left
eyepieces to align the diopter ring's bottom edge
with the engraved base line.
This position is the base position for 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
87
Engraved
base line
10x
10x