Model: ARK-4000A
1. AF mode automatic focus measurement(Y axis auto tracking )
2. 9-inch TFT capacitive screen
3. Built-in thermal printer with automatic paper cutting
4. Electric forehead support
5. Joystick operates smoothly
6. Support WiFi and Bluetooth data transmission (optional)
7. Support VGA external screen (optional)
8. Fast measurement speed：≤ 0.5s
9. Stable measurement repeatability
The ark-4000 is a state-of-the-art high-precision auto refractometer/keratometer, engineered for optimal accuracy and efficiency in eye examinations. Leveraging hartmann’s principle, the ark-4000 significantly enhances imaging clarity, allowing for clearer assessments of patients’ eye health.
ARK-4000A uses a Hartman measuring system that detects multiple light points on the cornea to calculate wavefront data. It provides accurate refractive and keratometric measurements, reduces the effect of eye movement, and ensures stable, repeatable results for reliable eye examination.
It's features automatic eye tracking in the Y-axis to keep alignment with the eye during measurement. It maintains stable focus, reduces manual adjustment, minimizes measurement error, and ensures accurate, repeatable results even when the eye moves slightly.
| Parameter | Specification |
|---|---|
| Corneal apex distance | 0.0, 12.0, 13.75, 15.0 mm |
| Spherical diopter | -25.00 D ~ +22.00 D (VD=12 mm, steps: 0.01, 0.06, 0.12, 0.25 D) |
| Cylindrical diopter | 0 D ~ 10.00 D (VD=12 mm, steps: 0.06, 0.12, 0.25 D) |
| Axis position | 0 ~ 180° (1° step) |
| Astigmatism symbol | –, +, ± |
| Pupil distance | 50 ~ 86 mm |
| Minimum pupil diameter | 2.2 mm |
| Measurement step | 0.01 D, 0.12 D, 0.25 D |
| Pupil diameter | 2.00 ~ 8.00 mm |
| Measure light energy | < 30 μW (ensures measurement safety) |
| Cornea curvature radius | 5.0 ~ 11.0 mm (30.68 ~ 67.50 D), step 0.01 mm |
| Cornea diopter | 33.0 D ~ 67.0 D (when the corneal equivalent diopter is 1.3375) |
| Stored data | 10 measurements each |
| Visual target | Guided cloud map |
| Data transmission | RS232 / Bluetooth / WiFi and others |
| Display | 9-inch screen (adjustable viewing angle) |
| Printer | 57 mm automatic paper cutting thermal printer |
| Power supply | AC 130/150 VA, 50/60 Hz wide power supply |
| Net weight | 17 kg |
| Gross weight | 22.5 kg |
| Packing size | 730 mm (L) × 400 mm (W) × 585 mm (H) |
Trusted Services:
1. Video chat to check our factory and products.
2. Free online technical support and training.
3. Free online installation support.
4. 1-3 Years quality warranty.
5. Lifetime after sales support.
6. Most products are CE and ISO 13485 certificated.
7. Free input voltage and plug customization for electrical machines.
8. Fast worldwide shipping, 5-10 working days delivery for most countries.
9. Partial prepayment is acceptable before shipping.
10. Discount price, non-branded or customized products can be offered for distributors.
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Room 135, 1101 Huyi Highway,Nanxiang Town,Jiading District,Shanghai, China.
It’s our pleasure to receive your enquiry, and we will provide full support always. “Bringing Value To Eye Care Practitioners Worldwide” is a consistent goal of Shanghai LINK Instrument. Contact us at any time.
