EXAMET-5 SERIES MICROSCOPE
UNITRON
®
73 Mall Drive, Commack, NY 11725 • 631-543-2000 • www.unitronusa.com
16
OPERATION
(continued)
Centering the Condenser
Transmitted Illumination
(Fig. 26-27)
Turn the condenser adjustment knob
①
to raise it to its
highest position.
Turn the spanner
②
to move the front lens into the light
path.
Rotate the 20x objective into the light path and focus the
specimen.
Rotate the field diaphragm adjustment ring
③
to move the
field diaphragm to the smallest position. The image of field
diaphragm can be observed through the eyepiece.
Adjust the condenser centering adjustment screws
④
to
center the image of field diaphragm to the field of view.
Open the field diaphragm slowly. If the image is in the
center and inscribed to the field of view, the condenser is
correctly centered (Fig. 27). In use, you can enlarge the
field diaphragm a bit and make the image circumscribed to
the field of view.
Adjusting the Field Diaphragm
(Fig. 25)
Transmitted Illumination
By limiting the amount of light entering the condenser, the
field diaphragm can prevent other light and strengthen the
image contrast. When the image is just on the edge of the
field of view, the objective will obtain the clearest image.
Rotate the field diaphragm adjustment ring
②
(Fig. 25)
clockwise to enlarge the field diaphragm, counterclockwise
to decrease it.
①
②
Fig. 26
Fig. 27
③
④
