INS-11091-3-O | 3.5V Streak Retinoscope Halogen OPTI+
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SKU: INS-11091-3-O
INS-11091-3-O | 3.5V Streak Retinoscope Halogen OPTI+
3.5V Streak Retinoscope Halogen model INS-11091-3-O
- Makes refractions easier than ever by producing one of the brightest, sharpest, and cleanest streaks available.
- Provides 2.8X the brightness of our standard retinoscopes
- Superior streak quality enables easier and quicker refractions – even in patients with small pupils
- Crossed linear polarizing filter eliminates bothersome glare from trial lenses, helping you perform a more precise exam
- External focusing sleeve improves comfort and maneuverability
- Sealed optics keep the lenses cleaner for more effective exams
- Fits all Welch Allyn 3.5 V power sources
Optical Specifications
Rotation
= 190°
Distance from the device to which the real imagea of the lamp filament is adjustable
= 450 mm
Distance from the device to which the virtual imagea of the lamp filament is adjustable
= 450 mm
Length of streak imageb
= 30 mm
Width of streak imageb
= 1.5 mm
Deviation from linearity of the streak image at the focusb.
= 2 mm
Rotation decentring of centre of streak imageb.
= 10 mm
a All distances are measured from the light exit of the device
b When focus at 500 mm
Electrical Specifications
Bulb
3.5 V 2.7 W
Operation mode
Intermittent, on-time should not exceed 2 min with off-time not less than 5 min
Environment Requirements
Operation
Environment Temperature
+10 C - +35 C
Relative Humidity
30% - 75%
Atmospheric Pressure
700 hPa - 1060 hPa
Shipping
Common Conveyance
Storage
Environment Temperature
-40 C - +55 C
Relative Humidity
10% - 90%
Atmospheric Pressure
500 hPa - 1060 hPa