Adjusting During Observation - Olympus BX53M Instructions Manual

When BX3M-URAS-S is combined
Image sensor
Camera
adapter
0.5X
0.63X
1X
· If the field diaphragm is not centered, the area around the
NOTE
field of view may be darkened partially. For the centering of
the field diaphragm, see "Centering of the field diaphragm
(FS)" (page 36).
· If observing the image with the eyepiece using the field
diaphragm settings same as those when acquiring the
image with the camera, the area around the field of view
may be darkened partially.
When using BX3M-RLA-S
1
Move the field diaphragm lever a of the reflected light illuminator as
follows to adjust the field diaphragm.
a
Field
diaphragm
2

Adjusting during observation

Reflected light brightfield observation
Adjust the illuminated area in order to acquire the high contrast
image.
Narrow down the field diaphragm so that the field diaphragm image
is circumscribed to the field of view depending on each objective
you use, and block the unnecessary light.
Reflected light darkfield observation
Be sure to open the field diaphragm during the observation.
1/3.2 1/2.5
1/1.8 inch
size
inch inch
2/3 inch
1/3 inch 1/2 inch
2 3
2 2
2 2
Field diaphragm lever position
Pressed in
Open to
maximum
BX53M
1 inch
3 5
3 4
2 3
Pulled out
Close to
minimum
35