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Specification:
| CR -39 Plano Lens |
Diameter:Φ65mmΦ70mm |
| Base:200B,400B ,600B,800B |
| CR-39 Round Lens |
Diameter:Φ70/24mm, Φ70/28mm |
| Base:400B ,600B |
| CR-39 Blend Bifocal Lens |
Diameter:Φ70/24mm, Φ70/28mm |
| Base:400B ,600B |
| CR-39 Flat-top Bifocal Lens |
Diameter: Φ70/28mm |
| Base:,400B ,600B |
| CR-39 Progressive Lens |
Diameter:Φ75mm |
| Base:200B,400B ,600B,800B |
| CR-39 One Side Hard-coating & One Face Multi-coating (AR-coating) For Above Lens | |
Φ65mm CR-39 Single-vision Semifinished Lens Specifications
|
|
Convexity |
Convave |
Central Thickness (mm) |
Edge Thickness (mm) |
|
Description |
Curvature |
Radius(mm) |
Curvature |
Radius(mm) |
|
000Base |
0.00 |
∞ |
4.06 |
123.15 |
10 |
14.4 |
|
200Base |
2.00 |
249.50 |
4.06 |
123.15 |
9.5 |
11.7 |
|
400Base |
4.01 |
124.75 |
4.06 |
123.15 |
11 |
11 |
|
600Base |
6.01 |
83.17 |
4.56 |
109.65 |
9.5 |
7.8 |
|
700Base |
7.01 |
71.29 |
5.06 |
98.81 |
8.5 |
6.2 |
|
800Base |
8.03 |
62.24 |
5.56 |
89.93 |
10 |
6.9 |
Φ70mm CR-39 Flat Top and Kryptop Semifinished Specifications
|
Description |
Convexity |
Convave |
Central Thickness (mm) |
Edge Thickness (mm) |
|
Curvature |
Radius(mm) |
Curvature |
Radius(mm) |
|
600Base |
6.01 |
83.17 |
6.05 |
82.60 |
8.0 |
8.0 |
Φ75mm CR-39 Progressive Semifinished Specifications
|
Diameter |
Nominal
Curve |
True
curve |
Radius |
Back
Curve |
Edge
mm |
MRP
mm |
Seg
Inset |
Fiting Cross
aboveMRP |
Seg at
50mm |
RX Range |
|
75mm |
200 |
2.64 |
200.80 |
4.00 |
12.00 |
3 |
3 |
2 |
1.56 |
-3.25D/-6.00D |
|
75mm |
400 |
4.20 |
126.40 |
4.62 |
10.50 |
3 |
3 |
2 |
2.49 |
_1.00D/-3.00D |
|
75mm |
600 |
6.30 |
83.98 |
6.12 |
9.50 |
3 |
3 |
2 |
3.80 |
_0.75D/+2.25D |
|
75mm |
800 |
8.45 |
62.80 |
6.12 |
10.00 |
3 |
3 |
2 |
5.19 |
+2.25D/+5.50D |
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