Olympus Pom Petunjuk Manual - Halaman 10

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Iris Diaphragm:

When the Bertland lens is inserted

the specimen forms its image at the

vicinity of the iris diaphragm lin the

middle of the head!.

When an observ-

er's interest is centered at a certain

portion of the specimen, this diaphragm

is used to cover up the

unnecessary

portions.

.Inserting

Ond

Rotating Lever for the

Analyzer:

When the lever is pulled out to the

fullest, the analyzer is set in the optical

path.

can he rotated throngh 90°

as illustrated.

The analyzer is usually

kept in the optical

path during the

observation,

except

for

a standard

observation.

When the lever is pushed in as

illustrated, the analyzer will not work

and this is

the position

used for a

normal observation.

Head:

The inclined head with an angle of 30°,

when the instrument is placed on a desk of the

normal height, avails the observer a comfortable

of the observation, as the eyepiece will position

at the height of approximately 36el1l from

the

bed.

Bertland Lens:

Set at the iower part of the inclined head

is the shifting knob for the Bertland lens along

with its centering knob.

With this lens on, the

interferential figure formed at the back focusing

plain of the objective mav be observed.

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