Technical Specifications - Haag-Streit BQ 900 Mode D'emploi

5 Technical specifications
Slit illumination
Slit image width 0 - 8 mm continuous
Slit image length 1 - 8 mm continuous
Illumination fields Circle ø: 8 / 5 / 3 / 2 / 1 / 0.2 mm
Test mark with fixation star
Slit image radial range ± 90°
Radial movement of the slit illumination relative to the
microscope axis Horizontal ± 90°, vertical 0 - 20°
Filters Blue, redfree (green), grey (10%).
The UV filter and the heat absorption
filter are permanently mounted.
Light source Tungsten incandescent
light bulb 6 V / 4.5 A
Illumination intensity 0 V
5 V
6 V
7.5 V 600 000 Lux at position 2
Irradiance depending on light wave length
see diagram at right hand side
Irradiance at max. intensity (7.5 V lamp) and
max. aperture *)
0.07 mW / cm
180 mW / cm
100 mW / cm
Spectrally-weighted photochemical aphakic output source ra-
diance L at maximum intensity (7.5 V lamp) and maximum
A
aperture: 450 mW / (cm sr).*)
2
Spectrally-weighted photochemical phakic output source ra-
diance L at maximum intensity (7.5 V lamp) and maximum
B
aperture: 430 mW / (cm sr).*)
2
Spectrally-weighted photochemical radiance L
a measure of the potential hazard that exists for a beam of
light to cause photochemical damage to the retina. L
the measure either for eyes in which the crystalline lens has
been removed (aphakes) and has not been replaced by a
UV-blocking lens or for eyes of very young children. L
the measure for eyes in which a crystalline lens is in place.
Values of L and L over 80 mW / (cm
A B
high for beams which completely fill a dilated pupil. *)
*) According to ISO 10939
Stereo-microscope
Stereo angle
Magnification changer
Ocular magnification
Range of adjusting eyepieces
Inter pupillary distance
0 Lux at position 0
150 000 Lux at position 1/2
300 000 Lux at position 1
(300 nm - 400 nm)
2
(380 nm - 700 nm)
2
(700 nm - 1100 nm)
2
and L give
A B
gives
A
gives
B
sr) are considered
2
13°
6.3x / 10x / 16x
25x / 40x
12.5x
+ 8 to - 8 diopters
52 - 78 mm
1500.7001000.04120
Diagramm Spektrale Bestrahlungsstärke El bei maximaler
Intensität und maximaler Spaltöffnung
Diagramme Puissance spectrale El aux valeurs maximales
d'intensité et d'ouverture
Diagram Spectral irradiance El at maximum intensity and
maximum aperture
7.5 V (Lampe / lampe / lamp)
Wellenlänge / Longueur d'onde / Wave length [nm]
Spektrale Bestrahlungsstärke / Puissance spectrale / Spec-
tral irradiance
[mW/(cm nm)]
2
© Haag-Streit AG, CH-3098 Koeniz, Switzerland