Use Of Eye Shields; Centering The Condenser - Optika Italy B-510 Serie Manual De Instrucciones

9.7

Use of eye shields

• Use with eyeglasses
Fold rubber eyeshields with both hands. Folded
eyeshields avoid scratching the lenses of eyeglasses.
(Fig. 35)
• Use without eyeglasses
Raise eye shields and observe at the microscope
placing eyes to the shields, avoiding external light to
disturb the observation. (Fig. 36)
9.8

Centering the condenser

1. Place the specimen on the stage, insert 10x
objective into the light path and focus.
2. Insert the front lens of the swing-out condenser
①. (Fig. 37)
3. Rotate the field
counterclockwise direction, to fully close the
diaphragm.
4. Rotate the condenser height adjustment knob ③
to focus the edges of the diaphragm.
5. Rotate the two centering screws ④ to bring the
bright spot in the center of the field of view.
6. Gradually open the diaphragm. The condenser
is centered when the diaphragm image is
symmetrical to the field of view.
7. In normal use, open the diaphragm until it
circoscribes the field of view.
Effects of the field diaphragm
Field diaphragm adjusts the illuminated area to obtain
a high contrast image.
Set the diaphragm according to the objective in
use until it circoscribes the field of view, in order to
eliminate unnecessary light to eyepieces.
diaphragm ring
②
③
in
①
②
Page 30
Fig. 35
Fig. 36
④
Fig. 37