Olympus BX-RLA2 Руководство по эксплуатации - Страница 11
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Field iris diaphragm image
Field of view of eyepiece
6. Open the field iris so that its image is almost the same size as (i.e. sub-
scribes) the field of view.
Using the Field Iris Diaphragm
{In reflected light brightfield observation
The field iris diaphragm adjusts the illuminated area to obtain an image
with high contrast.
According to the objective in use, adjust the FS knob ² of the reflected
light illuminator until the iris image circumscribes the field of view to block
unnecessary light.
{In reflected light darkfield observation
The field iris must be opened by pushing in the FS knob ².
BX-RLA2
8