A - 4
A.3 Selection of Blocking
FPD
FPD
PD
PD
H o r i z o n t a l l y
d e c e n t e r i n g
amount
Blocking point
Optical center
Rim center
B l o c k i n g p o i n t :
Rim center
Optical center
Rim center
PD for near vision
5 mm OUTSIDE
PD
BT
5 mm UP
Blocking point: 5 mm U/ 5 mm OUTSIDE
(2) Selection of lens and layout
V e r t i c a l l y
d e c e n t e r i n g
amount
Bifocal mode
See "4.5.3 Blocking bifocal lens"
(p. 4-20).
This if for bifocal lens. Block at 5 mm up
and 5 mm outside position from the top
line center of segment with a lens cup.
Active mode
See "4.5.1 Blocking in active mode
(p. 4-18).
This is for blocking a lens at the optical
center.
Bifocal lens
See "4.4.2.1 Layout of bifocal lens"
(p. 4-15).
Passive mode
See "4.5.2 Blocking in passive mode
(p. 4-19).
This is for blocking a lens at the rim
center.
Progressive power lens
See "4.4.2.2 Layout of progressive
power lens" (p. 4-16).
Summary of Contents for LE-9000LX
Page 1: ...PATTERNLESS EDGER Model LE 9000LX OPERATOR SMANUAL ...
Page 17: ...2 9 Top view or or ...
Page 19: ...2 11 ...
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