8
OPTICAL AND FIELD MAGNIFCATION TABLE
CLEANING
TROUBLESHOOTING TIPS
The optical magnifications achieved with the Colposcope are determined by 3 variables: the objective focal distance, the
position of the Magnification Selector and the by
eyepiece used.
The table shows the optical magnification and the observed field diameters, in millimeters, depending on those
variables. At the bottom line of the table the illuminated field is shown, corresponding to the light disk incident on the
field, with a diameter that depends only on the focus of the work objective.
The magnification selector has 6 positions: 1, 2, 3, 4, and 5. The 3 position is repeated in the selector. The working
position is the one aligned to the red dot mark.
The Objective, pointed to the field under clinical or surgical treatment, is exposed to blood and other bodily fluids. Spots
on the objective dim the passage of the light. Stains blur the light, reducing the luminosity of the optical observation.
Cotton padding wetted in alcohol rubbed softly, in CIRCULAR MOVEMENTS over the optical surface, is enough to clean
the stains, except those of clotted blood. Clotted blood shall be cleaned with cotton and hydrogen peroxide.
If the eyepieces are too dirty, change the cotton at each circular friction motion to avoid spreading out the dirt.
On the other hand, there is an effective protector for the objective, fitted under pressure at the outer edge of the lens
which protects the objective against “splatter” and contamination.
To have the eyepieces and objective well cleaned for clinical use, it is sufficient to use cotton.
The metallic parts (chrome-plated or painted) can be cleaned with cotton and alcohol.
ELECTRIC CONNECTIONS
Ensure that none of the following are present:
Broken wires inside the cable.
Loose wires at the connector.
Broken wires at the fixation, inside the connector.
Oxidized connectors terminals.
Magnifica(on
Field
Magnifica(on
Field
Magnifica(on
Field
Magnifica(on
Field
Magnifica(on
Field
1(0.4)
3.89
46.32
3.40
52.94
2.72
66.18
2.27
79.41
1.70
105.88
2(0.6)
5.83
30.88
5.10
35.29
4.08
44.12
3.4
52.94
2.55
70.59
3(1.0)
9.71
18.53
8.50
21.18
6.80
26.47
5.67
31.76
4.25
42.35
4(1.6)
15.54
11.58
13.60
13.24
10.88
16.54
9.07
19.85
6.80
26.47
5(2.5)
24.29
7.41
21.25
8.47
17.00
10.59
14.17
12.71
10.63
16.94
1(0.4)
4.86
41.18
4.25
47.06
3.40
58.82
2.83
70.59
2.13
94.12
2(0.6)
7.29
27.45
6.38
31.37
5.10
39.22
4.25
47.06
3.19
62.75
3(1.0)
12.14
16.47
10.63
18.82
8.50
23.53
7.08
28.24
5.31
37.65
4(1.6)
19.43
10.29
17.00
11.76
13.60
14.71
11.33
17.65
8.50
23.53
5(2.5)
30.36
6.59
26.56
7.53
21.25
9.41
17.71
11.29
13.28
15.06
1(0.4)
6.22
41.18
5.44
47.06
4.35
58.82
3.63
70.59
2.72
94.12
2(0.6)
9.33
27.45
8.16
31.37
6.53
39.22
5.44
47.06
4.08
62.75
3(1.0)
15.54
16.47
13.60
18.82
10.88
23.53
9.07
28.24
6.80
37.65
4(1.6)
24.87
10.29
21.76
11.76
17.41
14.71
14.51
17.65
10.88
23.53
5(2.5)
38.86
6.59
34.00
7.53
27.20
9.41
22.67
11.29
17.00
15.06
Magnifica(on Table for 985
Binocular Head Focal Length: F=170mm
Eyepiece
Posi(on of
BuNon
Objec(ve Lenses
175
200
250
300
400
90
108
144
10X/18
12.5X/16
16X/16
Illuminated Field
65
72
