AMCON EQ-6001 Manual do utilizador - Página 11

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Demarcation of Lens

For demarcation of a spherical lens, rotate the diopter measuring handwheel to focus the lines of

the (3) marker reticule clearly. Lightly move the lens to find the right optical center. Make three-

point printing marks with the printer.

For demarcation of the axis of a sphero-cylindrical lens, rotate the astigmatism axis measuring

handwheel to the required angle. Then rotate the diopter measuring handwheel while turning the

lens to focus the cylindrical marking lines clearly. Lightly move the lens to find the right optical

center. Make three-point printing marks with the printer.

For demarcation prismatic lens base, rotate the astigmatism axis measuring handwheel to the

required angle. Then rotate the diopter measuring handwheel to focus the lines of the (3) marker

reticule clearly. Lightly turn the prism lens so that the middle of the three green marking lines

passes through the center of the (8) eyepiece reticule. Make printing point marks by the use of

the printer.

MAINTENANCE

Do not dismantle the lensometer, as the accuracy will be compromised.

Store the lensometer in a dry, cool, indoor place in order to assure precise working condition.

Prevent the instrument from severe vibration or impact in order to avoid damage or loosening parts.

When changing the bulb, make sure the bulb is cool before touching.

Always keep the instrument clean. Do not touch the surfaces of the optical parts. Dust shall be cleaned

with an absorbent cotton-tipped applicator dipped with a mixture of ethanol and ether.

After each use, clean the instrument and cover it with a dust shield.

Problem

Bulb will not light up.

Cannot see eyepiece reticule when

adjusting the eyepiece readings.

Green marking image cannot be

seen.

Green marking image

cannot be seen clearly.

Deviation of the center

of the green marking image.

Translocation of the printing unit.

COMMON TROUBLE SHOOTING

Reason

Mains are not connected.

Observer has too much

uncorrected refractive error.

Bulb cannot be lighted or

Dust shield is still on.

Dust accumulates

on optical lens.

Lock screws are loose.

Loosening of limit

screw or loosening of

connecting screws.

Solution

Connect with the mains.

Wear a refractive correction

when using the lensometer.

Connect with mains or

Take off dust shield.

Clean it using cotton

dipped in cleaning solution.

Remove objective lens shield,

regulate three screws, lock them.

Regulate limit screw & lock

or regulate connecting

screws & lock.