LINKEYE Ophthalmic Automotive Refractometer with Keratometer Autorefractor ARK-4000 CE Certification


LINKEYE Ophthalmic Automotive Refractometer with Keratometer Autorefractor ARK-4000 CE Certification


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SKU: 3256803832768448 Categories: ,
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  • Model Number: ARK-4000
  • Origin: Mainland China
  • Certification: NONE

Range of measurement
-20~+20D(VD=12) 0.12D/25D step
-10~+10D 0.12D/25D step
0°~180° (1°step)
10-85mm,1mm step
Min Pupil Size
Corneal apex distance
0.0, 12.0, 13.75, 15.0
Spherical mirror degree
-20.00D ~ + 20.00D (VD = 12mm, 0.01,
0.06, 0.12, 0.25 units)
Axis position
10 ~ 180 ° (1 ° unit)
Cornea diopter
33.00D ~ 67.0D (when the corneal equivalent
diopter is 1.3375)
Cornea curvature radius
5.0 ~ 10.0mm (0.01mm accuracy)
Measure light energy
<30uw (ensure measurement safety)
Stored data
10 measurements each
8-inch TFT touch screen (adjustable viewing angle)
57mm thermal printer
Power supply
AC 100 ~ 250V, 50 / 60Hz, wide power supply
680mm x (width) 400mm x (height) 640mm
Gross weight



1. The time of delivery is 4-10 days after received your payment, by Aliexpress shipping, If you have other needs, please contact us. by our sellers Method shipping.

2. We will full test all products before send out and use the best packaging materials to ensure that the receipt of goods is in good condition.


1. You could make payment by Credit Card by AliExpress Escrow.

2. When make payment using Escrow, your money is deposited securely in your account. Money is only released to us after you confirm delivery.

3. Please contact us anytime if any problems with the payment.


1. Please provide correct delivery address and postal code.

2. If you have any special requirement, please tell me when you place order.

3. All Voltage will fit for buyer's country's standard, unless you have special request.


1. We offer you 1 year warranty and 18 months warranty for some devices.

2. We have spare parts for all items, within warranty time, if your item suddenly won't work, firstly, you provide photos and video to us to check.

3. What's the problem of your equipment, then we will give you a solution within 3 working days, promise 100% free solve your problems.Most time.

4. You don't need send back your equipment to repair, we will send spare parts and send video to you to teach you how to repair it.

5. If can not repair, we will change new one for you, and no charge all cost.


1. In principle, we are according to the actual payment amount to making a declaration, if you need change, please indicate the amount of customs declaration, we will consider the circumstances for making a declaration.

2. Customs duties and brokerage fees might be possible for some countries.

3. If refuse to pay import duties and cause the product return. All liability to the buyer. all expenses for goods returned need paid by the buyer, including return freight and tariffs.


LINK Optics is a professional Brand by AliExpress. The machines we sell are all genuine products. The machines sold do not have the manufacturer's logo. If you need to bring the manufacturer's logo Please note.

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LINKEYE Ophthalmic Automotive Refractometer with Keratometer Autorefractor ARK-4000 CE Certification
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