RB-473-B02M
23
6.4. Multifocal Lens
(1)
Place a lens on a lens stand and lower the lens
holder gently.
(2)
Measure the far point and press Memory/Add
switch. When Memory/Add switch is pressed, the
values of S, C, A and prism are stored in memory.
The values stored are fixed and will be shown in
red on the screen.
Press it again, then, the value of Ad1 is also shown.
(3)
Measure the near point. Move the lens so that the
near point comes to the center of the lens stand.
(4)
Press Memory/Add switch to store the ADD value
of the near point in memory.
After the measurement values are stored, ADD
values will become red.
For a trifocal lens, Press Memory/Add switch again
to display Ad2 on the screen. Bring the second near
point into the center of the lens stand again. Then,
repeat the step (3) and (4).
(5)
Press
to
change
to
the
right
lens
measurement. The measurement result of the left
lens is left displayed on the screen at this time.
M e a s u r in g
M a r k i n g O K
4 0
±
2 5
.
C y l
St e p
A b b e
S
C
A
Px
Py
Ad1
-2.00
0.00
0
I 0.00
U 0.00
0.00
R
L
R
M e as ur i n g
M ar k i n g O K
4 0
±
2 5
.
C y l
St e p
A b b e
S
C
A
Px
Py
Ad1
Ad2
-2.00
0.00
0
I 0.50
U 0.75
0.75
1.50
R
R
ADD value
L
R
Near point area
NOTE: "Alignment OK" and "Marking OK"
are not necessarily displayed for the
near point measurement.
