Essilor Instruments ALM 500, Руководство пользователя, Страница: 28 / 46

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6.4 6.4 6.4 6.4 Measurement of Multifocal Lens Measurement of Multifocal Lens Measurement of Multifocal Lens Measurement of Multifocal Lens
(1) Place the lens on the lens stand and lower the lens holder
softly on the lens.
(2) Take a measurement of far point and press the Memory/
ADD switch.
The values of SPH, CYL, AX and prism value are stored
in memory.
The measurement result stored is fixed, and the color of
the measurement value area is changed. “Ad1” is
displayed by pressing the Memory/ADD switch one more
time.
(3) Take a measurement of near point after confirming that
“Ad1” is displayed. Move the lens so as that the near
point (near-sight segment) comes to the center of the
lens stand.
(4) Store the ADD value of the near point (near-sight
segment) in memory by pressing the Memory/ ADD
switch.
In case of trifocal lens, display “Ad2” by pressing
the Memory/ ADD switch one more time. After that,
repeat (3) and (4) after bringing the second near
point (near-sight segment) to the center of the lens
stand.
Refer to “6.3 Measurement of Framed Lens” about the measuring procedure of the framed
lens.
A measurement can be taken even if the messages
“Alignment OK” and ”Marking OK” are not displayed.
NOTE NOTE NOTE NOTE
Near point
(Near-sight segment)
Display of ADD value