Olympus U-UCD8A Instrukcja obsługi - Strona 23

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Problem

c. Image glares and resolution

is low under brightfield obser-

vation.

d. Ring slit does not align with

phase plate of objective.

e. Darkfield contrast perfor-

mance is inadequate.

f. Polarizing performance is in-

sufficient.

Cause

Aperture iris diaphragm is stopped down

excessively.

Top lens is swung out.

Incorrect optical element is inserted in

light path.

Incorrect objective is inserted in light path.

Top lens is swung out.

Aperture iris diaphragm is stopped down.

Incorrect optical element is inserted in

light path.

Incorrect objective is used.

Darkfield ring is not centered correctly.

Polarizer is not inserted in light path.

Analyzer is not inserted in light path.

Optical element is engaged in light path.

Aperture iris diaphragm is opened.

Remedy

Open aperture iris diaphragm to proper

diameter.

Swing top lens into light path when 10X

to 100X objectives are in use.

Engage optical element that matches

objective in use by rotating turret.

Engage correct objective into light path.

Swing top lens in.

Open aperture iris diaphragm.

Engage darkfield ring in light path.

See tables in "Optical Elements and

Compatible Objectives" on page 25.

Center darkfield ring correctly.

Engage polarizer in light path.

Engage analyzer in light path.

Engage empty position by rotating turret.

Either stop down aperture iris diaphragm.

U-UCD8A

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