Olympus KHC Petunjuk Manual - Halaman 8
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F.
Use of Condenser
If an objective of low magnification (less than 10X) is in use, lower the condenser
slightly to avoid an uneven illumination as well as for a better result. The upper-lens
of the condenser may be removed. Removal of the upper-lens gives a better result than
lowering of the condenser. When the oil-immersion objective is in use, move it up to
the top of its movement range.
G.
Change of Bulb
Lay down the microscope, and loosen two screws
CD
underside the base with a coin
or something like that. Remove the cover and change the used lamp with a new one.
vI.
Optical Characteristics
Objective
Magnification
I
4x
1
10x
1
40x
I
100x
"",
".
Numerical
I
0.1
1
0.25
I
0.65
1
1.3
' "
aperture (N. A.)
' "
Working distance
I
19.771
I
I
"
,
5.1
0.4
0.11
"' "
(W. D.)
Eyepiece
"' .
Focal length
I
29.2
i
15.7
I
4.3
I
1.8
""
Total magnification
I
40x
I
100x
I
400x 11'OOOX
WF
10x
(Number
Depth of focus
I
112.5
I
18.0
I
2.0
I
0.6
of viewfield
18)
I
Actual viewfield
I
4.5
I
1.8
I
0.45
I
0.18
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