Olympus EHT-421 Instruction Manual - Page 16

Browse online or download pdf Instruction Manual for Microscope Olympus EHT-421. Olympus EHT-421 24 pages.

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OPERATING THE MICROSCOPE
A.
Interpupillary Distance and Diopter Adjustments
In order to obtain perfect binocular vision through the eyepieces,
it
is
necessary to adjust interpupillary distance and diopter difference in eye
acuity; otherwise, long time observation would put considerable strain on
the obser'.;er's eyes.
1. I
nterpupiltary
0
istance
Adjustment
(1)
Hold the (igh
t
and lef
t
eyepiece tubes with both hands and push the
tubes together, or pull them apart laterallY,whichever is required,
while looking through the eyepieces with both eyes, until perfect
binocular vision is obtained.
(2)
Memorize your interpupillary distance setting. Scale CD is provided
for this purpose, located between the eyepiece tubes.
*
This interpupillary distance adjustment is necessary each time
observers are changed. Re-focusing is also necessary whenever the
interpupillary distance is changed.
2.
Diopter Adjustment
a. For F HT and EHT
(1)
Rotate the diopter ring
®
on the right eyepiece tube to match the
scale on the ring
to
your interpupillary distance setting which you
obtained from scale
CD
as described in the preceding paragraph
1-121
(2)
Look at the image through the
right eyepiece with your right
eye and focus on the specimen
with the fine adjustment knobs.
(3)
Next, look at the image through
the left eyepiece with your left
eye and rotate the diopter ring@
to focus on the specimen with-
out using the coarse and fine
adjustment knobs.
b. For FHT-SW and EHT-SW
Each SW eyepiece is provided with
diopter ring for adjustment of your
diopter difference.
(1)
Rotate the diopter ring on the
right eyepiece tube to obtain
a clear image of the field of
view in the eyepiece.
(2)
Look at the image through the
right eyepiece with your right
eye and focus on the specimen
with the fine adjustment knobs.
(3)
Next,look at the image through
the left eyepiece with your left
eye and rotate the diopter ring
to focus on the specimen with-
out using the coarse and fine
adjustment knobs.
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