| ·PHYSICAL PROPERTIES |
| Denslty |
2.533 |
| Linear Exp.Coef. |
97×10-7 |
| Viscosity soft.Pt |
680℃ |
| Ann.Pt |
530℃ |
| Strain.Pt |
500℃ |
| ·REFRACTIVE INDICES |
| Line |
|
λ(nm) |
Value |
| F' |
Cadmium |
480.0 |
1.5236 |
| F |
Hydrogen |
486.1 |
1.5232 |
| e |
Mercury |
546.1 |
1.5229 |
| d |
Helium |
587.6 |
1.5228 |
| C' |
Cadmiun |
643.8 |
1.5206 |
| C |
Hydrogen |
656.3 |
1.5203 |
| Abbe Number |
γe |
60.5 |
| |
|
γd |
60.9 | |
| ·TRANSMISSION PROPERTIES(2mm) |
| VISIBLE |
380-780nm |
|
| Luminous Transmission Factor |
|
92% |
| Transmission Category |
|
|
| GB/T 2298-97 |
|
0 |
| ULTRAVIOLET |
|
|
| UV-B t(moy) |
280-315nm |
<0.1% |
| Solar UV-B transmission |
|
<0.1% |
| UV-A t(moy) |
315-380nm |
43.50% |
| Solar UV-A transmission factor |
|
32.50% |
| BLUE LIGHT |
380-500nm |
|
| Blue light transmission factor |
|
91.0% |
·TRAFFIC SIGNAL RECOGNITION |
| GB10810-1996 |
Pass |
| ISO9001-2000 |
Pass |
| GB10810-1989 |
Pass | |
