Quick Information
- Place of Origin:Korea
Description
PROMIX Semi-Finished Progressive Short Corridor Uncoated Blank
Specifications and Availability
- Material : 1.56 Index Resin (nd=1.549, Abbe=38, Specific gravity=1.28)
- Lens Size : 75mm Diameter with optics centered
- Nominal Base Curve : 1.50, 3.50, 5.75, 7.75
- Add Power : +1.00 to +3.00 in 0.25D steps
- Tolerance of Center & EdgeThickness : ±0.3mm
- Tolerance of Diameter : ±0.5mm
Middle Index 1.56 75mm Progressive Short Corridor Blank Data Sheet
|
Diameter
|
Nominal
convex curve |
Power
range |
Actual
convex curve |
Far vision
radious |
Sagitta
depth Gauge |
Back
Curve |
Center
Thickness |
Edge
Thickness |
Add
Powers in |
|
(mm)
|
(D)
|
(D)
|
(N=1.549)
(D) |
curvature
(mm) |
50 mm bell
(mm) |
(N=1.53)
(D) |
(mm)
|
(mm)
|
0.25 Steps
(D) |
|
75.00
|
1.50
|
-2.00
to -9.50 |
1.21
|
455.60
|
0.69
|
6.25
|
8.90
|
14.80
|
+1.00
to +3.00 |
|
75.00
|
3.50
|
-1.75
to +1.00 |
3.35
|
163.80
|
1.92
|
6.25
|
9.60
|
13.00
|
+1.00
to +3.00 |
|
75.00
|
5.75
|
-1.25
to +3.75 |
5.78
|
95.00
|
3.35
|
6.25
|
9.80
|
9.70
|
+1.00
to +3.00 |
|
75.00
|
7.75
|
+4.00
to +6.25 |
7.94
|
69.16
|
4.68
|
6.25
|
13.50
|
9.90
|
+1.00
to +3.00 |
Regarding the surfacing chart for 1.549 progressive lens, we calculated down to the third decimal place and therefore in case you use this data to the second decimal place, please round down.
Add Prism
|
ADD
|
1.00
|
1.25
|
1.50
|
1.75
|
2.00
|
2.25
|
2.50
|
2.75
|
3.00
|
|
Prism
|
0.66
|
0.83
|
1.00
|
1.17
|
1.33
|
1.50
|
1.67
|
1.83
|
2.00
|
Middle Index 1.56 Progressive Short Corridor Design Map
