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LM-7800 --------------------------------------------------------------------------
The Mounted Lens
[Figure 18. The structure of the typical progressive frame lens]
The dimension of progressive powered lens depends on the
specification of manufacture.
The old type progressive lens may not observe the 2~3mm shift toward
the frame center.
Do not lift up the lens by hand at the time of measurement. Place the
lens holder over the lens in order to hold the lens by foot. Then move
the lens forward/backward or left/right for measurement. Lifting up the
lens may cause the error in the measurement.
9.3.2.
Judging progressive lens
Step 1
Make sure that the icon in the left bottom of display is in the
standard mode as picture.
Step 2
Place the lens over the lens cap and wait 1~2 seconds.
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