Product description:
3.5V Streak Retinoscope Halogen OPTI+
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