7
8
Perform the alignment carefully when it comes closer to the near point and starts blinking.
Once the near point is detected, it blips. The cross cursor is fixed at the near point and its color changes to
blue. When the near point is attained, the ADD value is stored in memory automatically.
Measurement can be started from either right or left lens.
Display of ADD value and assessment graph, and manual operation (when [Manual] of [ADD Measure] is
selected).
When setting [Prog. Graph] as [On] on the [Setup] screen, the graph is displayed on the progress lens
measurement screen.
Depending on the type of lens, it may be difficult to detect each point automatically even though normally
the near and far points are detected automatically. In such case, take a measurement manually by
reference to the ADD value and assessment graph.
To take a measurement of far point manually, carry out the alignment in the same manner as the auto
measurement.
For the measurement of near point, press the Memory/Add switch where the ADD value is the highest
while the alignment cursor stays in the progressive area.
The near point is where the assessment line moves closer to the Y coordinate. Therefore, carry out
alignment by reference to the shape of the graph and blinking of
.
1. Graph
2
. High
3
. Low
4
. Assessment graph (blue line)
5
. ADD value transition graph (red line)
1. Near the center of lens
2
. Approx. 5 to 10 mm
3
. Far point
6. Measurement of ultraviolet [UV] transmission and blue light cut percentage /transmittance
It is possible to measure the [UV] cut and blue light cut percentage /transmittance of lens and possible to check
the [UV] and blue light function.
Measuring beam of [UV] cut percentage measurement is 375 nm, blue light cut percentage measurement is 425
nm, blue light transmittance is 470 nm.
It does not measure the cut percentage / transmittance of the entire UV and blue light.
USER MANUAL > MEASUREMENT
ALM800 - Auto lensmeter > V1 - 05-2020
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