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25
15180-101 Rev. F
15180-101 Rev. F
Operation
(continued)
Measurement Mode
(continued)
Progressive Lens
(continued)
Measuring a Progressive Lens
If the Near and/or Far points are set to be automatically mea-
sured (F/N.AT, N.AT) the measurements will be automatically
saved when the lens is properly aligned. If the progressive lens
is set to be measured manually, then the Measurement/Add but-
ton must be pressed to save the values after the lens is aligned.
1. Find the progressive zone by moving the lens from left to right,
and front to back,
slowly
. The green cross cursor appears when
the progressive zone is found. Refer to Figure OP-17.
Note:
If the unit does not automatically detect a progressive lens
because the ADD value is small, switch to progressive mode
by pressing the
button.
2. Take a measurement of far point by moving the lens so that the
center of the alignment mark overlaps with the cross cursor.
Note:
The cross cursor will change from green to blue, and the
gray box will turn blue, indicating the values are saved.
Refer to Figure OP-18.
3. Take a measurement of near point by moving the lens slowly, so
that the green cross cursor is moving towards the near point.
Note:
When the lens is centered, a green arrow will appear, indi-
cating the direction the lens should be moving in. Refer to
Figure OP-19.
Note:
If the arrow disappears, it means the lens has moved out-
side of the progressive zone. Slowly move the lens left or
right, until the arrow appears again, indicating it is centered.
4. While slowly approaching the near point, the green arrow will
start to blink, indicating it is close to the near point. Once the
near point is detected, it will make a sound. The cross cursor
will change from green to blue, indicating the near point value is
saved. Refer to Figure OP-20.
Note:
Another ADD value (Add2) can be stored in memory any-
where by pressing the Memory/Add button after measure-
ment.
-continued-
Figure OP-17 Progressive Lens
Figure OP-18 Align Lens
Figure OP-20 Store Values
Figure OP-19 Find Far Point
