描述

China good quality Optical Instrument Handheld Refractometer HAR-800/HAR-800
Features

 Non-contact and non-invasive

The light power is safe for eyes; There is 35cm(14 inches)between the

instrument and the eyes.

 Child-friendly

Little cooperation is required, suitable for infants and those who have

a language barrier.

▲ Speedy Inspection

One Key operation to complete the automatic detection of two eyes

▲ Accurate Result

The advanced optical detection principle provides an accurate result

including myopia, hyperopia, astigmatism, axial and anisometropia.

▲ Comprehensive detection modes

Infant mode is specially designed for infantsl Myopia model is customized

for myopia people and even high myopia people (HAR-880 only); Adult mode

is suitable for all adults.

▲ Easy targeting

Luminant cross-shape facilitates the targeting for operator.

 Ultrasonic distance measurement

Automatically monitor the distance with audiable and visual hint.

 Printer: Thermal printer is connected by infrared.

Specifications
FUNCTION PARAMETERS
Working distance
Adult/infant mode
335 ± 10mm
Confidence level
10
Myopia mode(HAR-880 only)
268 ± 10mm
Output of the laser radiation
150 to 200μW
Wavelength
850 ± 20nm
Data acquisition time
2s/eye
Battery voltage
D.c.11.1V
Distance measurement
Automatic, with audible and visual hint
Battery life
More than 6 hours of continuous usage
Low- Battery warning
Indicates 15 minutes us age remains

 

OPTICAL PARAMETERS
Mode
Infant mode
Adult mode
Myopia mode(HAR880 only)
Sphere range
-6.0D to +8.0D
-6.0D to +8.0D
-9.0 to +2.OD
Sphere intervals
0.25D/0.1D
0.25D/0.1D
0.25D/0.1D
Sphere tolerence
±0.5D
±0.5D
±0.5D
Cylinder range
-3.0D to +3.0D
-3.0D to +3.0D
-3.0D to +3.0D
Cylinder intervals
0.25D/0.1D
0.25D/0.1D
0.25D/0.1D
Cylinder tolerence
±0.5D
±0.5D
±0.5D
Axis of astigmatism range
1° to 180°
1° to 180°
1° to 180°
Axis of astigmatism intervals

Axis of astigmatism

tolerence
0.25D to 1.00D
±10°
±10°
±10°
1.25D to 3.00D
±5°
±5°
±5°