Table des Matières
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4
Description of equipment
4.1
Illumination unit
Lamp bulb
The tungsten lamp bulb is centered ex-works to obtain an
optimal illumination. The 'H-S' marking on the centering base-
cap indicates a genuine Haag-Streit spare part.
The light beam from the pre-centered bulb passes through the
condenser, the slit diaphragm and the illumination lens, before
it is directed to the patient's eye by the oblique mirror.
The following can be mounted in the path of the light beam of
the illumination unit
Filters (54)
56 Open aperture
57 Grey filter (10%)
58 Redfree filter
59 Empty space for accommodating an additional filter
Due to standard ISO 10939 the heat absorption filter and UV
filter are permanently mounted!
Apertures (53) operating (55)
60 Fixation star*
61 Apertures producing areas of 8, 5, 3, 2, 1 and 0.2 mm ø
62 Indication of wedge-shaped diaphragm for continuous
slit length adjustment in mm
63 Blue filter
* The target with the fixation star is particularly suitable for
examining the fixation in amblyopia.
4.2
Stereo microscope
64 Front lens
f105 mm angle of optical axis 13°
65 Turning knob with display of selected magnification
66 Magnification changer 5 step
(Galilean system)
67 Knurled ring bayonet joint
68 Binocular tube f132 for convergent viewing range of
pupillary distance 52-78 mm
69 Eyepiece 12.5x
Diameter of field 16 mm, sliding eyeguard (for spectacle
wearers also), diopter adjustable from + 8 to - 8 D
Total magnification
6.3x 10x 16x 25x 40x
Object image section ø in mm 32.0 20.0 12.7 8.0 5.1
53
54
55
S
60
64 65 66
1500.7200646.04010
56
57
58
8
5 3 2 1
0,2
61
67
68
© Haag-Streit AG, CH-3098 Koeniz, Switzerland
'H-S'
59
4
62
63
17
69
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