Olympus BX60 사용 설명서 - 페이지 31

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fig. 62

Condenser Centering

(Figa. 62,63,64)

1. Turn the condenser height adjustment knob® and raise the condenser

to its upper limit. (Fig. 52)

2. Focus on the specimen using the 10X objective.

* When using the U-SC swing-out condenser, move the top lent

Into the tight path.

3. Rotate the field iris diaphragm ring fj> in tha direction of the arrow to

where the diameter of the diaphragm image is at its smallest

4. Turn the condenser height adjustment knob <J) to where the diaphragm

image is seen in sharp focus within the field of view.

5. Turn the two condenser centering screws ® to move the diaphragm

imago to the center of the field of view.

6. Gradually open the field iris diaphragm. The condenser is properly

centered if the diaphragm image is centered and inscribed in the field

of view.

7. During actual use. open the field diaphragm slightly until the image

circumscribes tha field of view.

ot*

Field Iris Diaphragm

The field iris diaphragm restricts the diameter of the beam of light

entering the objective and thus excludes extraneous ight, improving

image contrast. The diameter of the field iris should be adjusted for

objective power to the extent that it just circumscribes the field of

view. (See "Compatibility of Objectives and Condensers" on the next

page I