PBF2 by Generic IR
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Environmentally Friendly
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
No transmission data available.
Optical Properties
| Refractive Index (nd) | 1.766591 |
|---|---|
| Abbe Number (Vd) | 28.390315 |
| Dispersion Formula | Herzberger |
| Wavelength Range | 0.3 — 11.9 µm |
$$L = \frac{1}{\lambda^2 - 0.028}
n(\lambda) = 1.73041 + 0.0115731\,L + 9.12429 \times 10^{-7}\,L^2 - 0.000887446\,\lambda^2 - 8.82119 \times 10^{-7}\,\lambda^4 + 3.63237 \times 10^{-9}\,\lambda^6$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 29.0 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 7.728 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
source: Handbook of Optics Vol. II
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| PBH25W | Ohara | 1.761797 | 27.107726 | |
| PBH25 | Ohara | 1.761797 | 27.107724 | |
| NBFD29 | Hoya | 1.77047 | 29.74 | |
| H-TF29 | CDGM | 1.77047 | 29.806014 | |
| SF55 | Schott | 1.7618 | 26.950177 | |
| FDS5 | Hoya | 1.761804 | 26.914901 | |
| D62-27 | Corning | 1.761802 | 26.90455 | |
| D56-27 | Corning | 1.755203 | 27.591377 | |
| SF4 | Schott | 1.7552 | 27.58 | |
| ZF6 | CDGM | 1.755205 | 27.546239 |
Similar Glasses (Generic IR)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| CSBR | Generic IR | 1.69706 | 34.108015 | |
| IRG3 | Generic IR | 1.844836 | 32.330322 | |
| IRG2 | Generic IR | 1.891717 | 29.896648 | |
| IRG11 | Generic IR | 1.680932 | 44.434326 | |
| CALCITE | Generic IR | 1.658643 | 48.541403 | |
| GEO2 | Generic IR | 1.608459 | 41.728763 | |
| MGO | Generic IR | 1.737505 | 53.505455 | |
| KBR | Generic IR | 1.559967 | 31.977241 | |
| ALON | Generic IR | 1.788917 | 58.204971 | |
| IRG7 | Generic IR | 1.564424 | 43.736647 |