A.2 Microscope And Eyepiece; A.3 Adjustable Focusing Target - Haag-Streit BQ 900 Mode D'emploi

A. Microscope and eyepiece
67 Front lens f105 mm
68 Turning knob with display of selected magnification
69 Magnification changer 5 step
(Galilean system)
70 Knurled ring for quick fit
71 Binocular tube f130 for convergent viewing
range of pupillary distance 53 - 78 mm
72 Eyepiece 12.5x
Diameter of field 16 mm
73 Index (white spot)
74 Knurled ring with diopter scale for setting the refraction
of the examiner (± 8 D)
75 Sliding eyeguard (for spectacle wearers)
Total magnification
Object image section ø in mm 32.0 20.0 12.7 8.0 5.1
A.3 Adjustable focusing target
If the lamp cable (76) is connected, the fixation lamp burns as
soon as the power supply switch is activated, then the focusing
target (81) is visible.
The fixation target can be brought into any position by moving
the bearer's arm (77). This permits uninterrupted observation
through the microscope and simultaneous guidance of the
patient's eye to any desired position. This is especially advan-
tageous in examining the fundus.
It's a condition, that the patient's eye is correctly positioned at
the headrest's height marker (80).
Ametropia of the patient from +10 D to -15 D (78) can be
corrected (79). Steady fixation of the eye is maintained as
accommodation and convergence are avoided.
6.3x 10x 16x 25x 40x
1500.7001000.04120
67 68 69 70 71
76
77
78
79
80
81
© Haag-Streit AG, CH-3098 Koeniz, Switzerland
72 73 78 75