Optical characteristics K8
| Refractive Index at ne | 1.51872 |
|---|---|
|
Refractive Index, at nF |
1.52283 |
|
Thermal Coefficient of Refractive index at |=0.546 microns, °C-1 for 0,+20°C |
2.8 . 10-6 |
|
Transmission Range microns (thickness 10MM) |
0.35,2 |
|
Transmittance ti (l) vs. wavelength l BK7 |
|
| Internal Transmittance ti (l) vs. wavelenght l | |
|---|---|
|
l,MKM |
ti(l) |
|
0.310 |
0.59 |
|
0.320 |
081 |
|
0.350 |
0.986 |
|
0.365 |
0.994 |
|
0.370 |
0.995 |
|
0.380 |
0.996 |
|
0.390 |
0.998 |
|
0.400 |
0.998 |
|
0.420 |
0.998 |
|
0.460 |
0.999 |
|
0.500 |
0.999 |
|
0.700 |
0.999 |
|
1.060 |
0.999 |
|
1.530 |
0.997 |
|
1.970 |
0.968 |
|
2.325 |
0.89 |
|
Refractive Index n vs. wavelength l |
|
|---|---|
|
l,MKM |
no/ne |
|
0.365 |
1.53626 |
|
0.4047 |
1.53024 |
|
0.4358 |
1.52669 |
|
0.4800 |
1.52283 |
|
0.4861 |
1.52238 |
|
0.5461 |
1.51872 |
|
0.5876 |
1.51680 |
|
0.5893 |
1.51673 |
|
0.6328 |
1.51509 |
|
0.6438 |
1.51472 |
|
0.6563 |
1.51432 |
|
0.7065 |
1.51289 |
|
0.8521 |
1.50981 |
|
1.0140 |
1.50731 |
|
1.0600 |
1.50669 |
|
1.5296 |
1.50094 |
|
1.9700 |
1.49500 |
|
2.3254 |
1.48929 |
Thermo-physical characteristics K8
| Thermal Linear Expansion at, °C-1 for -30,+70°C | 7.1 . 10-6 |
|---|---|
|
Thermal Conductivity W/(m .°C) at 20 °C |
1.114 |
|
Specific Heat Capacity, J/(kg .°C) |
858.0 |
|
Melting Point, °C |
559 |
Mechanical characteristics K8
| Density, g/cm3 at 20 °C | 2.51 |
|---|---|
|
Poisson Ratio |
0.206 |
|
Young Modulus (E), Pa |
8.1 . 1010 |