Nidek Medical LM-7, Operator'S Manual

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3. OPERATING PROCEDURE : Progressive Power Lens Measurement
3.6 Progressive Power Lens Measurement
3.6.1 Uncut lens measurement
Measure a lens at the marks of the distance portion and near portion printed on the lens.
Perform measurement in the same manner as
“3.5 Bifocal and Trifocal Lens Measurement” (page 38) .
3.6.2 Mounted lens measurement
Measure a lens on the progressive power lens measurement screen or auto measurement screen.
After the distance and near portions are detected according to power changes in the progressive
power lens, the guides (target and arrow) for aligning the lens position appear on the screen.
1
Press the periphery of the alignment circle to dis-
play the progressive power lens measurement
screen.
For the screen change on the auto measurement screen,
see
“ ♦ Screen change in auto measurement” (page 46) .
Specify the lens side if necessary.
Press the R/L measurement select button to switch
to or .
1 Distance power measuring position
2 Near power measuring position
3 Horizontal reference line
• A lens must be placed with its horizontal reference line parallel to the lens table.
• If the marks printed on the lens interrupt the measuring beam, the target may wiggle.
Move the position of the lens slightly and measure it with the target stabilized.
1 Distance portion
2 Intermediate portion (progressive zone)
Power changes progressively.
3 Near portion
±
²
³
³
±
²
³
1707141668223 承認済
Uncontrolled copy when printed.