{"id":6590,"date":"2025-10-31T02:54:02","date_gmt":"2025-10-31T02:54:02","guid":{"rendered":"https:\/\/linkeyegroup.com\/?post_type=product&p=6590"},"modified":"2026-04-22T00:52:46","modified_gmt":"2026-04-22T00:52:46","slug":"ark-4000a-auto-refractometer","status":"publish","type":"product","link":"https:\/\/linkeyegroup.com\/pt\/product\/ark-4000a-auto-refractometer\/","title":{"rendered":"Refract\u00f3metro\/querat\u00f3metro autom\u00e1tico ARK-4000A"},"content":{"rendered":"
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Explorar detalhes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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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\u2019s principle, the ark-4000 significantly enhances imaging clarity, allowing for clearer assessments of patients\u2019 eye health.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\"Hartman<\/figure>

Hartman measuring system<\/h3>

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.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\"Automatic<\/figure>

Automatic Eye Tracking in Elevation<\/h3>

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.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Especifica\u00e7\u00f5es:\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Par\u00e2metro<\/th>Especifica\u00e7\u00f5es<\/th><\/tr><\/thead>
Corneal apex distance<\/td>0.0, 12.0, 13.75, 15.0 mm<\/td><\/tr>
Spherical diopter<\/td>-25.00 D ~ +22.00 D (VD=12 mm, steps: 0.01, 0.06, 0.12, 0.25 D)<\/td><\/tr>
Cylindrical diopter<\/td>0 D ~ 10.00 D (VD=12 mm, steps: 0.06, 0.12, 0.25 D)<\/td><\/tr>
Axis position<\/td>0 ~ 180\u00b0 (1\u00b0 step)<\/td><\/tr>
Astigmatism symbol<\/td>\u2013, +, \u00b1<\/td><\/tr>
Pupil distance<\/td>50 ~ 86 mm<\/td><\/tr>
Minimum pupil diameter<\/td>2.2 mm<\/td><\/tr>
Measurement step<\/td>0.01 D, 0.12 D, 0.25 D<\/td><\/tr>
Di\u00e2metro da pupila<\/td>2.00 ~ 8.00 mm<\/td><\/tr>
Measure light energy<\/td>< 30 \u03bcW (ensures measurement safety)<\/td><\/tr>
Cornea curvature radius<\/td>5.0 ~ 11.0 mm (30.68 ~ 67.50 D), step 0.01 mm<\/td><\/tr>
Cornea diopter<\/td>33.0 D ~ 67.0 D (when the corneal equivalent diopter is 1.3375)<\/td><\/tr>
Stored data<\/td>10 measurements each<\/td><\/tr>
Alvo visual<\/td>Guided cloud map<\/td><\/tr>
Data transmission<\/td>RS232 \/ Bluetooth \/ WiFi and others<\/td><\/tr>
Ecr\u00e3<\/td>9-inch screen (adjustable viewing angle)<\/td><\/tr>
Printer<\/td>57 mm automatic paper cutting thermal printer<\/td><\/tr>
Fonte de alimenta\u00e7\u00e3o<\/td>AC 130\/150 VA, 50\/60 Hz wide power supply<\/td><\/tr>
Net weight<\/td>17 kg<\/td><\/tr>
Gross weight<\/td>22.5 kg<\/td><\/tr>
Packing size<\/td>730 mm (L) \u00d7 400 mm (W) \u00d7 585 mm (H)<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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