Nidek Medical LE-9000DX Express, Operator'S Manual

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6. Adjust the bevel position.
( a) Changing the bevel position only at the part where the edge is thick
1) Align the cursor to
B CRV
.
2) Change the bevel curve value to move the
bevel position toward the front or rear
surface of the lens.
: The bevel curve turns sharply.
: The bevel curve turns slightly.
As the curve value is changed, the bevel
position moves from the edge’s thinnest
point as the base (The ratio 5:5 will be
maintained). The shifted amount of the
bevel is maximum at the lens edge’s thickest
point. Change the bevel curve, watching the
bevel sectional view at the lens edge’s
thickest point.
The curve value with the “A” mark on the
head shows that it is a computer-calculated
value. This value produces the same bevel
curve that is processed in the auto processing
mode.
: The curve of the front base curve (FRNT), rear base curve (REAR), or ratio will be selected.
→
Specified curve value
→
Front base curve
→
Rear base curve
→
Ratio
(curve profiling (curve profiling
the front surface the rear surface
of a lens) of a lens)
NOTE
• The curve value can only be selected within a range where the bevel is on the lens
edge. Therefore, the bevel will never be off the edge, and a single-sided bevel will
never be produced even if the bevel curve value is changed.
• When processing a cataract lens, select the rear base curve (REAR) for the curve value.
The specified value, front base curve, or Ratio is not appropriate for the lens to
process the bevel properly.
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The bevel curve
turns slightly.
The bevel curve
turns sharply.
<Convex lens>
The bevel curve
turns slightly. The bevel curve
turns sharply.
<Concave lens>