China Supplier Optometry Equipment Portable Children Auto Refractometer, Find details about China Portable Children Auto Refractometer, Children Auto Refractometer from China Supplier Optometry Equipment Portable Children Auto Refractometer
Optometry Instrument Hand Held Auto Refractor Non-Contact And Non-Invasive
Features:
1. Non-contact and non-invasive:
The light power is safe for eyes; There is 35cm(14 inches)between the instrument and the eyes.
2. Child-friendly:
Little cooperation is required, suitable for infants and those who have a language barrier.
3. Speedy Inspection:
One Key operation to complete the automatic detection of two eyes:
4. Accurate Result:
The advanced optical detection principle provides an accurate result: including myopia, hyperopia, astigmatism, axial and anisometropia.
5. 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.
6. Easy targeting:
Luminant cross-shape facilitates the targeting for operator.
7. Ultrasonic distance measurement:
Automatically monitor the distance with audiable and visual hint.
8. Printer:
Thermal printer is connected by infrared.
Technical Specification | |||
Model | HAR-880 | ||
Mode | Infant mode | Adult mode | Myopia Mode (HAR-880 only) |
Sphere range | -6.0D~+8.0D | -6.0D~+8.0D | -9.0 to +2.0D |
Sphere interval | 0.25D/0.1D | 0.25D/0.1D | 0.25D/0.1D |
Sphere tolerance | ±0.5D | ±0.5D | ±0.5D |
Cylinder range | -3.0D to +3.0D | -3.0D to +3.0D | -3.0D to +3.0D |
Cylinder interval | 0.25D/0.1 | 0.25D/0.1D | 0.25D/0.1D |
Cylinder tolerance | ±0.5D | ±0.5D | ±0.5D |
Axial of astigmatism range | 1°~180° | 1°~180° | 1°~180° |
Axial of astigmatism interval | 1° | 1° | 1° |
Axial of astigmatism tolerance 0.25D-1.00D, 1.25D-3.00D | ±10°,±5° | ±10°,±5° | ±10°,±5° |
Working distance Adult/infant mode , Myopia mode (HAR-880 only) | 335±10mm,268±10mm | Confidence level | 10 |
Output of laser radiation | 150 to 200um | Wavelength | 850±20nm |
Data acquisition time | 2s/eye | Battery Voltage | d.c. 11.1V |
Battery life | More than 6 hours of continuous usage | ||
Low-battery warning | Indicates 15 minutes usage remains | ||
Distance measurement | Automatic, with audible and visual hint |