Huvitz Excelon XD Operator's Manual page 33

☞
Distance (㎜) from the Rear side of the lens
☞
Adjust the position according to the Lens Base Curve and the
Minimum Thickness (0~10)
• The value of the edging options affects the final output as followings :
• Like the above picture, if the operator use ratio(%) mode from the Front side
about a so thin lens, the machining of the thinnest part could be dangerous.
• Using the distance(mm) mode from the front side, the operator can designate
the specific distance, However, if the thickness of the thin area is less than the
double of the designated value, the machine internally forces it to be machined
by the 50% of the thickness at the thin position.
Base
Curve
• In the base curve mode, base curves of (+) lenses and (-) lenses exist the
50% 30%
1.6mm 1.6mm
9
1
Base
Curve Base
Curve
(-) lens
Excelon XD Operator's Manual
[ Ratio(%) mode
from the front side ]
50%
[ Distance(mm) mode
from the front side ]
1
9
[Base curve mode]
(+) lens
33