16/27
INV100-FL
Centering the mirror reflected image (Fig.6)
★
The mirror reflected image has been centered
before leaving the factory. Do not adjust the
knob
⑦
please if not necessary. Only when the
burner has been centered precisely, can the
knob
⑦
be adjusted.
Note: once the knob is adjusted, the reflected
mirror cannot be reconverted to the status when
leaving the factory.
Knob control:
（
Fig.6
）：
1
．
The middle knob
⑥
is the mirror reflected
image focusing knob which can sharpen the
reflected image.
2
．
The knobs at both sides
⑦
can adjust the
up/down or left/right position of the mirror
reflected image.
。
3.1.8
Centering the Field Iris Diaphragm
(fig
9、10)
1.
Engage the 10
×
objective in the light path, and
place the specimen on the stage and bring into
approximate focus.
2. Pull the field iris diaphragm lever
②
out
until the diaphragm comes into the smallest
state.
3. Use the hexangular wrench to adjust the
two field iris diaphragm centering screws
alternately to move the image of the
diaphragm to the center. (Fig.2 show the
adjustment of diaphragm)
4. Push in the field diaphragm lever to open
the diaphragm. As this makes slight
deviation noticeable, adjust the centering
precisely.
5. Enlarge the diaphragm until it just
circumscribes the field of view.
Fig 9
②
①
③
④
Adjusting the field iris diaphragm
The field diaphragm
adjusts the diameter of the illuminating beam to obtain good
image contrast. Keeping the field diaphragm stopped down to
the smallest required area for each observation makes it
possible to prevent color fading of areas outside the
observation target region. According to the objective in use,
adjust the diaphragm image using the field diaphragm lever so
that the field of view is circumscribed by the field diaphragm
to exclude stray light.
Fig 10
c
b
a
