69
OPERATING PROCEDURES
:
Setting Processing Conditions and Entering Layout Data
2
2.5.4
Entering layout data for multifocal lenses
■
For the multifocal lenses, the lens is blocked to the boxing center of the frame alinging the lens
position based on the segment base point (top line center of segment).
■
According to prescription, enter lens layout data (FPD, near PD, and optical center height).
1
Select Multi for the lens type from the
Layout screen.
2
Enter FPD (or DBL).
3
Enter the prescribed near PD value (PD for the segment) in the PD (or 1/2PD) numeric
field.
4
Select a method to enter the optical cen-
ter height.
Press the
button to display the pop-
up menu. Press the PD
or BT
but-
ton to change the entry method.
• Changing the mode to “Multi” automatically enters Passive mode.
Base point
(Top line center of segment)
PD for near vision
Содержание Ice 900
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