1.67 SEMI-FINISHED SINGLE VISION POLARIZED LENSES (SPHERICAL)
1671-SF (Spherical)
| BASE CURVE | DIAMETER | TRUE CURVE | SAG | BACK CURVE | CENTER THICKNESS | EDGE THICKNESS | RADIUS |
|---|---|---|---|---|---|---|---|
| 0.50 | 70 mm | 0.59 | 0.347 | 3.50 | 11.0 mm (+/-0.1) | 14.0 mm (+/-0.1) | 900.21 |
| 2.00 | 75 mm | 2.30 | 1.361 | 4.42 | 9.2 mm (+/-0.1) | 12.0 mm (+/-0.1) | 230.22 |
| 4.00 | 75 mm | 4.29 | 2.557 | 5.78 | 9.5 mm (+/-0.1) | 11.0 mm (+/-0.1) | 123.48 |
| 6.00 | 75 mm | 5.13 | 3.071 | 4.42 | 9.0 mm (+/-0.1) | 8.0 mm (+/-0.1) | 103.29 |
| 8.00 | 75 mm | 8.24 | 5.060 | 6.31 | 11.5 mm (+/-0.1) | 8.0 mm (+/-0.1) | 65.29 |
| Color | Visual Transmittance (550 nm) | Polarization | |
|---|---|---|---|
| Gray-A |  |
30% | 90% |
| Brown-A |  |
30% | 90% |
| Gray-C |  |
15% | 99% |
| Brown-C |  |
15% | 97% |
| Refractive Index | 1.664 Nd | |
|---|---|---|
| Abbe | 32 | |
| Density | 1.37 | |
| UV Avsorbing Rate at 400 nm | 100 % | |
| Grass Transition Point (C) | 118 | |
| Polarizing Film is inserted on | 0.5 – 1.4 mm from front surface | |
| Tinting | OK | |
| Scratch Resistant Coating | OK | |
| Anti Reflective Coating | OK | |
| Power Range at Main Meridian |
CX Curve |
(D) |
| 0.50 | -10.00 to- 6.25 | |
| 2.00 | -6.00 to -3.25 | |
| 4.00 | -3.00 to 0.00 | |
| 6.00 | +0.25 to +3.00 | |
| 8.00 | +3.25 to +6.00 | |
- Blocks 100% UV B & 100% UV A
- American National Standard ANSI Z80.3-1996 = PASS
- European Standard EN 1836-1997 = PASS
- Australian/New Zealand Standard AS/NZS 1067-2003 = PASS
- Our lenses are all produced with Japanese lens material in Japan.
