Nidek Medical LM-7, Руководство оператора

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3. OPERATING PROCEDURE : Marking
3.11 Marking
3.11.1 Marking at optical center
Marking is performed to indicate the optical center position and axis direction.
1
Set a lens.

“3.3 Lens Setting” (page 32)
2
Perform alignment of the lens.
Move the lens to align the target to the center of the align-
ment circle until the target changes from (cross) to
(large cross).
●
For lenses having cylindrical power
While seeing the axis value, rotate the lens until the prescribed axis value is displayed.
When auto read is set to any other than “Off”, the mea-
sured data is automatically locked in after the target is
aligned.
See the axis value displayed to the upper right of the tar-
get.
For the axis of 90º or 180º, the shape of the target
changes.
• To measure PD of the mounted lenses, mark the right and left lenses at the optical center, and mea-
sure the distance between the center markings.

“3.10 Measurement Using Scale Mode Function” (page 55)
• For simple astigmatism lenses such as S 0.00 D and C -1.00 D or equivalent lenses, the target cannot
be moved in the bus direction.
Mark a lens at the geometric center in the correct direction.
• When marking a cylinder lens in the bus direction, adjust the axis to 180º.
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